Answer:
1.
Explanation:
The statement which describes family size since the eighteenth and nineteenth centuries is families are having fewer children today. Therefore, the correct option is A.
Due to a number of social, economic, and cultural changes, such as improvements in health care, easier access to contraception, changes in social standards, and changes in family responsibilities and dynamics, family size has generally decreased over the past few centuries. As a result, the average family size in many parts of the world is now smaller than it was in previous centuries.
Therefore, the correct option is A.
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1. Which of the following is not a natural cause of water pollution? a. Volcanoes b. Algae blooms c. Animal waste d. Oil spills e. Silt from storms and floods
Answer:
D
Explanation:
Well because oil spillage is normally caused by man. Either intentionally spill the oil into water sources or people who bomb the oil pipe line, the oil may spill into the nearest water body
A part of an mRNA has the sequence GGA. Which change to this sequence
would indicate a missense mutation?
Answer:
C.GCA
Explanation:
Answer:
its C
Explanation:
NEED HELP ASAP
Select the correct text in the passage.
Which SENTENCES correctly describes the effect of marine debris?
Marine debris is very harmful to marine life. - not an answer choice
1 Its effect, however, is only limited to marine creatures, as it does not affect birds and other species that depend on the sea.
2 One of the major contributors to marine debris is plastic.
3 Garbage and litter from the beach do not contribute to marine debris. Research shows that marine debris is likely to decrease over time as plastics degrade into smaller particles.
4 New methods of manufacturing have been adopted to reduce material consumption and thus prevent a larger contribution to marine debris.
it would be answer number two it tells what the major contributor is.
Answer:
2 and 4
Explanation:
These two options show true effects and facts of marine debris, as plastic is one of the largest contributors and number 4 shows that places are attempting to mitigate the effect. However, 1 and 3 are both false claims and therefore incorrect displays of marine debris' effect
Select a field of study within environmental science. Describe how a professional in that field would contribute to the environmental study of a lake.
There are five main fields of environmental science; each one created up of multiple smaller domains.
These five areas are atmospheric sciences, ecology, environmental chemistry, geosciences, and social sciences
What are three fields within environmental science that focus on non living aspects of the environment?Climatology is the study of the Earth's atmosphere and climate. Hydrology is the reflection of Earth's water resources.
Earth science is the analysis of the Earth's nonliving systems and the planet as a whole.
Thus, These five fields are atmospheric sciences, ecology, environmental chemistry, geosciences, and social sciences.
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essay : What is the impact of pandemic on climate change and vice versa?
Answer:
.
Explanation:
To explain the last sentence, what I mean by that is the sudden decrease in air pollution in just a few weeks is what would have typically taken multiple years to do. Due to less drivers, factories shutting down, and more, less toxic and infirm mental hazardous chemicals were released into the atmosphere in an extremely short amount of time. However, nowdays, it is almost back to where is was before the pandemic.
If you were to examine the organisms living in the river ecosystem, which organism would you see least often
Answer:
Gila monsters
Explanation:
Gila monsters are found in desert regions of the Southwest United States. They are not found in river ecosystems.
Part A:
Based on the first-generation parents depicted in the pedigree, what is the probability rate of the light color phenotype being expressed?
A.) 25%
B.) 50%
C.) 75%
D.) 100%
Part B:
The type of adaptation that the beetle (Ladybugs) in this environment uses to increase its chance of survival is ______.
A.) Migration
B.) Living in large groups
C.) Camouflage
D.) Flight
Answer:
Explanation:
Part A:
Based on the first-generation parents depicted in the pedigree, what is the probability rate of the light color phenotype being expressed?
A.) 25%
B.) 50%
C.) 75%
D.) 100%
Part B:
The type of adaptation that the beetle (Ladybugs) in this environment uses to increase its chance of survival is ______.
Classify the interactions as being direct or indirect competition.
is it possible to go to heaven in a rocket?
Answer:
To answer this question, no, no one can get back to earth from Heaven if they don't like it. There's no way for anyone to not like Heaven.
Explanation:
energy is obtained from the?
1. What is a limiting factor?
a variable that causes population growth to speed up
O
a variable that causes population growth to increase
a variable that causes population growth to slow
a variable that limits maximum total food availability
A limiting factor is a variable that causes population growth to be slow.
It is a variable of a system that causes a noticeable change in output or another measure of a type of system.
A limiting factor is a variable that causes population growth to slow down. Hence the correct option is B.
In ecology, limiting factors are environmental factors or resources that restrict the growth, abundance, or distribution of a population or species in an ecosystem. These factors can be biotic or abiotic. Biotic limiting factors include competition for resources, predation, and disease, while abiotic limiting factors include factors like temperature, water availability, nutrient availability, and sunlight.
When a population experiences a shortage or restriction in essential resources, it cannot grow at its maximum potential, leading to a slowdown in population growth. Limiting factors play a crucial role in regulating population dynamics and maintaining ecological balance in natural ecosystems. By understanding limiting factors, ecologists can gain insights into how ecosystems function.
Hence the correct option is B.
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Differen groups of plants
Answer:
bryophytes (mosses), (seedless vascular plants), gymnosperms (cone bearing seed plants), and angiosperms (flowering seed plants).
Which one of the following choices is NOT affected by soil?
A. How well plants can grow.
B. The rate at which erosion occurs.
C. How quickly carbon reacts with minerals.
D. How water flows across the surface of the Earth.
Answer:
c
Explanation:
hope this helps a ton thanks for your question
Which statement concerning the energy in the
pyramid is correct?
(1) The producer organisms contain the least oft
amount of energy.
(2) Stored energy decreases as it is passed from
consumer to consumer.
(3) Consumers contain more energy than
producers. og eiriT lice orli
(4) Decomposers are the source of energy
for
this pyramid.
Answer:
Option 2
Explanation:
Stored energy decreases as it is passed from consumer to consumer.
Energy decreases as it progresses up the pyramid.
During the final stages of human gestation, receptors
oxytocin increase on
for the hormone
the smooth muscle tissue in the wall of the uterus. The
release of oxytocin during labor stimulates the smooth muscle tissue in the
wall of the uterus.
The vigorous contraction of the uterine smooth muscle
helps push the baby through the
process
birth canal so that delivery can occur. This
involves the interaction of which organ systems?
Select one:
•
Endocrine, reproductive, and excretory
•
Endocrine, muscular,
and reproductive
•
Endocrine
and reproductive only
•
Endocrine and muscular only
The correct answer is option B
a red flower and a white flower can be expressed on a plant, depending on genetics. which outcome would indicate codominance as the inheritance pattern for flower color in this species?
Answer:
A phenotypic outcome that would indicate codominance woul be if the flowers produced had both red and white petals or had red and white colour expressed at the same time.
Explanation:
Codominance is when two phenotypes both show up in the resultant offspring. The most common rexample for codominance is roan cattle or animals with spotty patterns that can have browns, blacks and white simlutaneously. So if the red and white phenotypes both appeared (and the petals of the flower had red and white but were not a mix of red and white-ie pink flowers would be incomplete dominance-) then this would indicate codominance was an inhereitance pattern of the flower species.
Match the effect of exercise to the correct term.
4. Which scenario is an example of allopatric speciation?
A disease ravages a large fox population, killing all members that did not have a genetic resistance to the disease
A river separates members of a squirrel population that used to occupy the same geographical area
Houseflies from a certain region migrate and interbreed with a different housefly population in a neighboring area
Hawks with thin, sharp beaks primarily eat fish and small rodents, while hawks with larger beaks tend to eat reptiles and larger birds.
A river separates members of a squirrel population that used to occupy the same geographical area, Thus, option "2" is correct.
What is Allopatric speciation?Allopatric speciation is said to occur when two groups of organisms are separated by a physical or geographical barrier. Examples of such barriers are ocean, mountain range, rivers, etc. A good example of allopatric speciation is Galapagos finch.
Different species of this bird can be found in different islands at Galapos, which is located at Pacific Ocean off South America. The ocean is barrier that isolate the species from one another.
Thus, option "2" is correct.
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Question 2
2 pts
A scientist observes that a unicellular organism that consumes algae consistently
moves toward a light source in the observation chamber, even if there is no algae
present in the lighted area. Which behavior best describes the movement?
Positive chemotaxis
Negative phototaxis
Negative chemotaxis
Positive phototaxis
Answer:
Positive phototaxis
Explanation:
"Phototaxis is called positive if the movement is in the direction of increasing light intensity and negative if the direction is opposite."
27 It is harder to push a box up a ramp with a rough surface than up ono
with a smooth surface because the rough surface provides moro
A motion
B friction
C gravity
D magnetism
EN
28 A boy can see his face when he looks into a mirror. Which physical
property of the mirror makes this happen?
A reflectiveness
B temperature
C flexibility
D volume
AV
29 The diagram below shows a T-shirt hanging on a clothesline. Letter A
represents a simple machine.
Clothesline
Pole
T-shirt
Which type of simple machine is represented by letter A?
A lever
B balance
C pulley
D inclined plane
Grade 4 Science -- June 19
[12]
Friction and reflectiveness are the correct answers for question no. 26 and 27.
What is the role of friction?It is harder to push a box up a ramp with a rough surface as compared to a smooth surface because the rough surface provides more friction that is the force opposite to the motion.
A boy can see his face when he looks into a mirror due to the reflectiveness property of the mirror that makes this happen because a boy see his reflection in that mirror.
So we can conclude that friction and reflectiveness are the correct answers for question no. 26 and 27.
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On June 22, how much daylight is received by locations in the Arctic Circle?
in the diagram below of a human skeleton, what is the name of the bone
labeled D?
A
Cranium
Rib Cage
F
Vertebra
G
B
H
Carpals
Metacarpals
Phalanges
K
с
Tarsals
D
Metatarsals
E
Phalanges
A. Humerus
B. Tibia
C. Scapula
D. Femur
Answer:
Explanation:
in the diagram below of a human skeleton, what is the name of the bone
labeled D?
A
Cranium
Rib Cage
F
Vertebra
G
B
H
The bone labeled D in the diagram is the femur.
What is femur ?The femur is the longest and strongest bone in the human body, located in the upper leg or thigh. It articulates with the pelvis at the hip joint and with the tibia and fibula bones of the lower leg at the knee joint. The femur is responsible for supporting the body's weight, allowing for movement, and protecting the organs in the pelvic region.
The femur is divided into several sections, including the head, neck, shaft, and condyles. The head of the femur is a spherical structure that articulates with the acetabulum of the pelvis to form the hip joint.
The neck of the femur is a short section that connects the head to the shaft. The shaft of the femur is the long, straight part of the bone that extends from the neck to the condyles. The condyles of the femur are the rounded surfaces at the bottom of the bone that articulate with the tibia and fibula to form the knee joint.
The femur is composed of two types of bone tissue: compact bone and spongy bone. The compact bone is located on the surface of the bone and provides strength and protection, while the spongy bone is located in the interior of the bone and provides shock absorption.
Injuries to the femur can be serious and require medical attention. Fractures of the femur can occur due to high-impact accidents or falls, and may require surgery to repair.
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charles darwin predicted the existence of a moth with a very long "tongue" after he discovered a species of night-blooming flowers with extremely long, tube-shaped blooms. About 50 years after Darwin died, such a moth was discovered. Apply lesson concepts to explain the basis for Darwin's prediction.
The prediction of Darwin depends on the sizes of both the moth's tongue and the tube of blooming flowers.
What do you mean by Species?Species may be defined as a group of organisms that can reproduce naturally with one another and create fertile offspring.
The moth's long tongue helps them to take the nectar from the tube of blooming flowers which are also very long. In this situation, the moths that possess long tongues survive in both conditions whether the tube of blooming flowerers is short or long.
This same concept was also predicted by Charles Darwin. The long tongue of the moth gives them the advantage in every situation of the tube's length.
Therefore, the prediction of Darwin depends on the sizes of both the moth's tongue and the tube of blooming flowers.
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PLEASE HELP
Consider the following process;
1. Sensory nerves signal that you are hungry.
2 You eat.
3. Food is broken down into nutrients.
4. Nutrients enter your blood.
Which of these body system does not work with your nervous system in this process?
A. The Digestive System
B. The Muscular System
C. The Skeletal System
D. The Immune System
Sorry if I am wrong
Answer:
Food is broken down into nutrients.
Skeletal system
Explanation:
Ammonia is very toxic to cells, even in moderate concentrations. Which two general strategies do organisms use to keep ammonia concentrations at safe, low levels? Select two answer choices.
To keep ammonia concentrations at safe and low levels it is transported to the liver where it is transformed into urea and glutamine. Urea is carried to the kidneys and excreted in the urine.
What is the path of ammonia in the human body?Ammonia is a substance produced by intestinal bacteria and body cells during protein digestion. It is a waste product that is normally transported to the liver, where it is transformed into urea and glutamine. Urea is carried to the kidneys and excreted in the urine.
With this information, we can conclude that to keep ammonia concentrations at safe and low levels it is transported to the liver where it is transformed into urea and glutamine. Urea is carried to the kidneys and excreted in the urine.
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13. What feature of this plant was least likely inherited from its parents?
O A. Having flowers
O B. Being wilted
O C. Flat leaves
O D. Being green
Answer: B
Explanation: That'd be based on how it's taken care of
Plum Island is divided into two diverse areas. (A) What are the differences between
the two sides? What are the relative fractional sizes of the sides. (B) During a storm
what are the differences in effect on the flora and base of the island?
Great Gull Island is home to one of the biggest breeding populations of roseate terns in the continent and is home to the world’s biggest concentration of common terns, with about 9,500 pairs nesting on the island.
Plum Island sits just off the tip of the north fork of Long Island and acts as a wildlife refuge where over 100 bird species. All of these areas are privately-owned and closed to the public.
Is there a Plum Island?A barrier beach island located off the coast of Newbury and Newburyport in northeastern Massachusetts,
Thus, this is the answer.
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!! NEED DONE SOON!!
The mouth and stomach are connected by the ____.
esophagus
rectum
liver
small intestine
Answer:
The answer is Esophagus.
Explanation:
The tube that connects the mouth and the stomach is the esophagusAll wetlands are considered freshwater ecosystems.
Please select the best answer from the choices provided
T
F
All wetlands are considered freshwater ecosystems.The given statement is false.
What is ecosystems?
An ecosystem is a community of living organisms and their physical environment, interacting as a system. It includes all the living things (biotic factors) in a particular area, as well as the non-living things (abiotic factors) such as air, water, and soil. Ecosystems can be small, such as a pond, or large, such as a rainforest, and are interconnected through various ecological relationships. The health of an ecosystem depends on the balance and interdependence of its components.
The statement is false. While many wetlands are freshwater ecosystems, some wetlands can also be saline or brackish ecosystems depending on their location and surrounding environment. For example, mangrove swamps and salt marshes are wetlands that are typically found in coastal areas and have a high salt content. Therefore, wetlands can be either freshwater or saline ecosystems.
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where most photosynthesis take place
Answer:
Chloroplasts
Explanation:
In the most important part of photosynthesis, the chlorophyll in chloroplasts absorb light energy from the sun and use it to rearrange water and carbon dioxide into sugar (specifically glucose) and oxygen. The light energy is converted into chemical potential energy and is stored in the glucose.
Answer:
chloroplasts
Explanation:
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