Answer:
36 hours
Explanation:
When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. The bubbles are a result of the formation of hydrogen gas. What does the hot test tube indicate?
A.
Hydrogen gas absorbs heat.
B.
The reaction releases heat.
C.
A chemical change has been reversed.
D.
The reaction absorbs heat.
On East Africa's Serengeti Plains, herbivores migrate across this area following what?
nuts
grasses
rivers
berries
Answer: Grasses! The north and west crossing the Grumeti River, There where more grass.
By measuring the height of the tortoise, this scientist is gathering what?
a.) independent variables.
b dependent variables.
c.) quantitative data.
d.) qualitative data.
Describe the structure of the study independent variables , dependent variables and detail why the researchers would have used random allocation.
Answer:
To reduce systematic error.
Explanation:
The researchers would have used random allocation in order to decreases systematic error in the experiment. If we don't apply random allocation to the experiment, there is high chances of systematic error in the experiment and the result is not of high quality. Independent variables is a type of variable whose variation does not depend on another factor while on the other hand, dependent variables is a type of variable whose variation depend on another factor.
A group of atoms bonded together is a molecule.
A. True
B. False
Answer:
A. True
Explanation:
A group of two or more atoms that are chemically bonded together is known as Molecule
-TheUnknownScientist
how are bacterias different from animals ?
Answer:
Bacteria are neither animals nor plants.... Because bacteria are prokaryotic, they do not have a nucleus and no membrane-bound organelles. In contrast, plants and animals are made up of eukaryotic cells, which means they have a nucleus and membrane-bound organelles like mitochondria or golgi apparatus.
Explanation:
Answer:
Bacterias have simple cells and are typically single cell organisms where as animals which have more complex cells are are multi celled organisms UwU
HOPE THIS HELPS
-Todo <3
Explanation:
Whale
Frog
Horse
Lion
Human
Bat
Bird
R
1. The image above represents an example of what type of homologies?
a. Vertebrate homology
b. Molecular homology
C. Biogeographical homology
d. Anatomical homology
Answer:
D. Anatomical homology
Explanation:
Anatomical homology is the similarity between organisms
What are the similarities and differences between phototropism and gravitropism?
NEED HELP ASAP
Answer:
phototropism is (biology) the movement of a plant towards or away from light while gravitropism is (biology|botany) a plant's ability to change its growth in response to gravity
Do you think the organisms in image 3 support the theory that modern organisms evolved from ancestral organisms? Explain your answer.
Answer:
occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift.
Answer:Yes, the organisms in image 3 support the theory that modern organisms developed from ancestral organisms. The two organisms share similar body structures and traits. So, there will be similarities in their genes, and they’ll share an evolutionary connection.
Explanation: Edmentum answer
Necesito ayuda Comparaciones del sistema digestivo de los animales: Rana, tiburón, gallina, vaca e iguana
Answer:
The digestive system of Frog, shark, chicken and cow are the following:
Explanation:
The digestive tract of frog is divided into foregut that consist of esophagus, stomach, duodenum, liver, pancreas, gall bladder and midgut/hindgut where intestine is present. The digestive system of frog comprise of oral cavity, pharynx, esophagus, stomach and intestine. The digestive system of chicken consist of beak, crop, proventricular, ventriculus, small Intestine, large Intestine and Cloaca. The digestive system of cow comprise of mouth, esophagus, rumen, reticulum, omasum, abomasum, small intestine and large intestine.
A producer is also called a(n)
A. autotroph
B. heterotroph
Answer:
A. autotroph
Explanation:
Hope this helps
An animal with no natural enemy is a ____________.
Answer:
predator or a.pex predator
An animal with no natural enemy is an apex predator. Apex predators are also known as top predators or alpha predators.
They are species that reside at the highest level of the food chain within their ecosystems. They have no natural predators and primarily feed on other animals. Apex predators play a critical role in maintaining the balance and functioning of their respective ecosystems.
These predators are often characterized by their exceptional hunting skills, agility, strength, and ability to control the populations of their prey. They exert top-down control on the food chain by keeping the populations of lower-level consumers and herbivores in check, which in turn has cascading effects on the entire ecosystem. Thus, apex predators have no natural enemies.
Learn more about apex predators, here:
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In class, a student creates an image showing part of the process of protein synthesis.
What occurs in the cell to create the strand of mRNA needed before translation can occur?
Answer:
Yo the answer is A
Explanation:
What is a modified stem?
A stem that grows underground.
A stem that does not produce leaves.
A stem that bends back toward the ground.
A stem that grows bark.
Answer:
A rhizome is a modified stem that grows horizontally underground and has nodes and internodes. Vertical shoots may arise from the buds on the rhizome of some plants, such as ginger and ferns. Corms are similar to rhizomes, except they are more rounded and fleshy (such as in gladiolus).
Explanation:
more simple, a stem that grows underground :)
where does respiration take place?
Answer:
Mitochondria
Example:
Respiration takes place in the mitochondria of cell in the presence of oxygen which is called aerobic respiration.
Find the area of the triangle.
18 ft
17 ft
The area of the triangle is
fta.
Answer:
area is add so 17+18 is 35 ft
How is secondary succession different from primary succession?
Select one:
Secondary succession occurs after a disturbance in an area that was
previously uninhabited.
Secondary succession occurs when animals are introduced to an area that
had only plants.
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
Secondary succession occurs over a longer period of time than primary
succession.
Answer:
Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.
what did the sparks in miller and urey's experiments simulate
Answer:
That Molecules could be produced under reducing conditions.
Explanation:
What is the abiotic energy source for all ecosystems? A. Sunlight B. Plants C. Animals D. Air
please helllppp
Answer:
A. Sunlight
Explanation:
Answer:
A. Sunlight
Explanation:
It is A because sunlight is nonliving, and an energy source (producer).
What do you think the offspring of a green alien and pink alien will look like?
Answer:
of the parents' characteristics will appear in the offspring, but the characteristics that are more likely to appear can be ... o If you had the ability to genetically engineer your alien baby (choose its traits),
- Explain the relationship between group behavior, an organism's survival, and the change in a species over time.
- Formulate one scientifically testable question related to the affect of group behavior on an individual's survival.
- What evidence could be used to support a claim that answers your scientifically testable question?
Answer:
https://www.nap.edu/read/5787/chapter/6
https://www.nature.com/scitable/knowledge/library/how-does-social-behavior-evolve-13260245/
Explanation:
I hope that it will be helpful
Describe an experiment to show that
Shoots are positively phototrophic.
Answer:
A well-watered potted plant is placed inside the box. If the window is kept closed for about 24 hours the plant shows normal growth. If the window is kept open, it is found after two days that the shoot tip bends and grows towards light proving that it is positively phototropic.
Explanation:
Hope this helps! Brainliest pls?
is Bacteria used in photosynthesis.
Answer:
They carry out oxygenic photosynthesis i.e, they use water as an electron donor and generate oxygen during photosynthesis. Their photosynthetic systems closely resembles to that of eukaryotes: These bacteria use Phycobilins as accessory pigments. CO2 in these bacteria is assimilated through calvin cycle.
Explanation:
Answer:
NO
sorry there is no explanation
Which are characteristics of all bacteria? Check all that apply. NO LINKS
1. They lack a nucleus.
2. They have a nucleus.
3. They eat other organisms.
4. They make their own food.
5. They are eukaryotes.
6. They are prokaryotes.
Answer:
1. They lack a nucleus
4. They make their own food
6. They are prokaryotes
Explanation:
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
What leads to the likelihood that that there are successful traits in an ecosystem that will allow organisms to survive and reproduce in changing conditions?
A. less biodiversity
B.smaller food webs
C.greater biodiversity
D.specialist consumers
Answer: I think it’s C
Explanation: more biodiversity, the more reproduction and success.
Greater biodiversity leads to the likelihood that there are successful traits in an ecosystem. Therefore, option (C) is correct.
What is biodiversity?Biodiversity refers to the variety of species and the genetic diversity within those species that exist within an ecosystem. When an ecosystem has high levels of biodiversity, there is a greater chance that at least some species will have the traits necessary to survive and reproduce in changing conditions.
Organisms with successful traits in one set of conditions may not necessarily have those same traits in different conditions. Therefore, a diverse range of species with various sets of traits increases the likelihood that some of those traits will be beneficial in different conditions.
Learn more about biodiversity, here:
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Which of these most likely explains why the bacteria population stopped
growing?
A. The bacteria came in contact with a virus that killed off the population.
B. The bacteria could not produce any longer because the population was too large.
C. The bacteria competed for nutrients and died after all of the nutrients were
consumed
D. The bacteria evolved into another organism.
Answer:
C. The bacteria competed for nutrients and died after all of the nutrients were
consumed
Explanation:
Since no other materials were added, this option makes the most sense.
Write a balanced chemical equation between
potassium hydroxide and
hydrochloric acid.
Answer:
HCl + KOH = KCl + H2O
Explanation:
i am not sure if I got it right, but I think this is a balanced equation
1. Which of the following serves as the passageway of eggs from the ovary to
the uterus?
a. Vagina
b. Uterus
c. Oviduct
d. Ovary
Answer:
in a human? its D or C...
Explanation:
The larvae of potato beetles cover themselves in their own feces to avoid being consumed by predators. What system produces feces?
Answer:
Explanation below
Explanation:
Hemisphaerota cyanea, also known as the palmetto tortoise beetle, is a type of leaf beetle that cover themselves with their own feces, just to persuade most predators to pass them by. This form of outrageous defense, developed by the crafty beetle, was discovered by biologists at the Cornel university.
The feces comes out of the hindgut of the beetle, fashioned like golden strands, which can be used to protect the vulnerable body of the beetle.
