Which of the following is a necessary trait of a good hypothesis?
Answer:
Must be TESTABLE and falsifiable.
Explanation:
1. Should be empirical statements
2. Must be general. It explains a general phenomenon, rather than a single occurrence.
3. Plausible - it shouldn't defy logic.
4. Specific, meaning that the concepts are carefully defined.
5. Testable!
correctly describe pH of a solution?
which of the following is most important when determining the type of biome that is found in a certain area ?
Climate!!! It's climate
Answer:
Climate!!! It's climate.
Explanation:
A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old
Answer:
The age of the rock is 5 million years
Explanation:
Fraction of radioactive substance remaining = 6.25% = 625/10000 = 1/16
Number of half-lives undergone by the substance to leave behind 1/16 of the original sample
1/16 = (1/2) * (1/2) * (1/2) *(1/2)
Therefore, the substance have decayed 4 times
One half=life = 1.25 million years
Four half-lives = 4 * 1.25 million years = 5 million years
Therefore, the age of the rock is 5 million years
Which mineral is present is banana?
Answer:
Potassium
Explanation:
They are packed with potassium, a mineral electrolyte that keeps electricity flowing throughout your body, which is required to keep your heart beating. Bananas' high potassium and low sodium content may also help protect your cardiovascular system against high blood pressure,
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Answer:
I had to attach my response, as Brainly wrongly marked it as profane. I hope this helps!
.The water on Earth came from ancient ..
Answer:
Half of Earth's water may have come from ancient asteroid collisions Asteroid samples returned to Earth in 2010 provide new evidence of an extraterrestrial origin for half the planet's water.
Explanation:
Answer:
from god or an ice age
Explanation:
i will mark brainliest
identify 3 abiotic factors and their roles in the economy in your own words
Answer:
Abiotic factors are the non-living parts of the environment that have a major influence
on living organisms. They can help determine things like how tall trees grow, where
animals and plants are found, and why birds migrate. The most important abiotic factors
include water, sunlight, oxygen, soil and temperature.
Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All
living organisms need water. In fact, water makes up at least 50% of almost all living
things. Some organisms are made up of 95% water! Water is also essential because
other substances easily dissolve into it. This allows water to carry nutrients to cells and
wastes away from them. Without water, animals become weak and confused, and they
can die if they don’t get enough water. Think of how you feel after you take a long run.
Do you feel thirsty? This is your body signaling to you that you need water.
Sunlight is the main source of energy on Earth, which makes it an extremely important
abiotic factor. Sunlight is necessary for photosynthesis, the process where plants use
carbon dioxide (CO2) and water to make sugar – food for the plants that later becomes
food for animals. Without the sun, plants could not live, and without plants, animals could
not live! Sunlight is also plays a role in the production of oxygen and to an area’s
temperature, which are discussed in detail below.
Like water, oxygen (O2) is another important abiotic factor for most living organisms.
Oxygen is used by cells as an energy source. It gives cells the energy they need to carry
out important functions, for growth, and reproduction. Without oxygen, humans and the
other organisms that use oxygen would not be able to live! Oxygen is produced by green
plants through the process of photosynthesis, and is therefore directly linked to sunlight.
Soil is considered an abiotic factor since it is mostly made up of small particles of rock
(sand and clay) mixed with decomposed plants and animals. Plants use their roots to get
water and nutrients from the soil. Soils are different from place to place – this can be a
big factor in which plants and animals live in a certain area.
Temperature is an abiotic factor that is strongly influenced by sunlight. Because the
amount and strength of sunlight varies by location, the earth’s surface has different
temperatures in different zones. While some animals and plants can bear extreme heat
or extreme cold, others can only survive well in moderate temperature ranges. In fact, all
plants and animals are adapted to survive between a minimum and maximum range of
temperatures. For example, a penguin from the polar region couldn’t live in a 110°F
desert. It would be too hot! Temperature, then, helps to influence which plants and
animals can live in an area.
Look at Diagram 1.The boxed structure is called a/an-
A. DNA molecule
B.nitrogenous base
C.nucleotide
D.base pair
Which organisms contain chloroplasts to help with food production?
match each biome with the correct description.
1. driest biome
2. largest biome
3. most species
4. least species
5. four seasons
6. used to grow crops
- rainforest
- tundra
- desert
- coniferous forest
- temperature deciduous forest
- grasslands
Answer:
Rain forest: Most species
Tundra: Least species
Dessert: Driest Biome
Coniferous Forest: largest biome
Temperate Decidious Forest:
Grasslands: Used to grow crops
Explanation:
Match each biome with the correct description.
Desert - The driest biome.Taiga or boreal forest - The largest biome.Rainforest - The biome with the most species.Tundra - The biome with the least species.Temperate deciduous forest - The biome with four seasons.Grasslands - The biome used to grow crops.What is Biome?A biome is a large, recognizable geographic area that is home to a variety of ecosystems and communities of plants and animals that have evolved in a particular environment, including climate, soil, and topography. Temperature, rainfall, altitude, latitude, and the types of plants that grow there are used to identify biomes.
Aquatic biomes such as tundra, taiga or boreal forests, temperate deciduous forests, tropical rainforests, grasslands, savannas, deserts, and marine and freshwater habitats are just a few of the primary categories of biomes. Each biome has a different set of traits and characteristics that influence the types of plants and animals found there.
Therefore, match each biome with the correct description.
Desert - The driest biome.Taiga or boreal forest - The largest biome.Rainforest - The biome with the most species.Tundra - The biome with the least species.Temperate deciduous forest - The biome with four seasons.Grasslands - The biome used to grow crops.Learn more about Biome here:
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The picture shows a model of a cell.
What is the main function of the parts labeled Xin the model?
O A. To store enzymes that break down food
B. To provide cells with energy for their activities
C. To use energy from sunlight to make sugars
D. To hold and protect the cell's DNA
Answer:
it is b: to provide energy for their activities.
Explanation:
the organelle that's labeled x is a mitochondria.
Answer: the answer is b I just got iy
Explanation:
what type of rock is this?
It's Sedimentary and the name of the rock is Conglomerate
Anthony was saving money each week from his allowance to purchase new basketball shoes for a total of $245 he already had $65 saved up how many weeks will it take for him to reach $245 if he saves $15 each week
Answer:
It will take him exactly 12 weeks
Explanation:
If he already has 65 you subtract that from 245 and you get 180
You divide 180 by 15 to get the number of weeks and you get 12
What is the likelihood of a category 5 hurricane making a fall in Maryland
The answer fam is....... There is a very low probability that the Maryland coast will be hit by a magnitude 5 earthquake.
I_11) WHICH THREE ELEMENTS ARE FOUND IN ORGANIC COMPOUNDS
A) C,H,O
B) C, H, Ne
C) N, H,
ĐÀ N, C#, Ph
Answer:
a) CHO
Explanation:
Usually its four elements: hydrogen, carbon, oxygen and nitrogen, are the major components of most organic compounds
Which is an example of a pioneer species? O lichens O ferns O spiders O squirrels
Answer:
lichens
hope that helps you
Answer:
Number A aahhahhha
Explanation:
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Explain Meiosis.
Please do it in 3 sentences or more
Answer:
Explanation:
Meiosis is a special type of cell division of germ cells in sexually-reproducing organisms used to produce the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each paternal and maternal chromosome.
Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth.
Answer:
The internet has revolutionized the world and made communication, fast and easy.
Explanation:
The use of the internet and wireless communication has impacted the lives of many as the process of communication has lead to changes in how we view, collect, and analyze and the world is around us. The use of GIS, GPS, and many cartographic tools and techniques has helped to spread our knowledge and awareness about the geographic events related to weather, climate, and changes associated with the temperatures.Advances in imaging and wireless communication for space exploration
have led to a faster internet and wireless communication on earth.
The use of the faster internet and wireless communication as a result of the
technological development makes the way data and information is gathered. This includes more digital ways rather than archaic ways through computers and phones.
The use of techniques such as GPS monitoring helps to determine the
location of a person or an item. It also brings about more awareness about
weather, climate due to access to temperature changes.
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A wave hits a wall as shown. A brick wall with a green arrow pointing to the wall from below and right at a shallow angle. Another green arrow starts where the first arrow touched the wall and goes up and left at the same shallow angle. As the wave interacts with a wall, which kind of wave interaction is shown?
Answer:
b
Explanation:
Answer:
D. Reflection
Explanation:
Got It Right On EDGE.
After the 2004 tsunami disaster in Asia, there were reports that trained elephants had moved away
from the coastline before the tsunami struck. Scientists wondered if elephants had sensed the oncoming wave and the earthquake that created it. Elephant trunks have two kinds of nerve endings that are sensitive to pressure differences, but little is known about nerve ending distribution in the elephant's skin or feet. An elephant has recently died at a nearby zoo and scientists have decided
to dissect one of its feet to search for any special nerve endings. Results show a high density of pressure-sensitive nerve endings in the front of the foot and along the edges, which supports the
idea that elephants are sensing seismic signals produced by such disasters as earthquakes.
1. Independent variable
2. Dependent variable
4. Constant
5.controls
6.hypothesis
7. Sample size
8. Presence of repeated measures
Answer:
In the given dissection for the finding of the idea that elephant can sense the seismic signals generated by natural disasters are as follows:
Independent variable: it is the variable which influences the dependent variable or the dependent variable depends on. Here the area of the feet that is chosen to be dissected is the independent variable.
Dependent variable: It is the variable that is manipulated or influenced by the independent variable, in this dissection the sensitive to the pressure, nerve ending in the selected area of the feet.
Constants: It is a variable that remains constant or fixed in the complete experiment. The number of the selection area is constant hat is in one foot here.
Controls: There is no such control present in this experiment However, the density of pressure-sensitive nerve endings can be considered as control.
Hypothesis: the pressure-sensitive ending is significantly enriched in the feet of the elephant.
Sample size: subject in this study is only one elephant and one foot so the sample size is 1.
Presence of repeated measures: Repeated measures are not performed during this study is only one experiment of dissection is performed on a single subject.
Are humans heterotrophs or autotrophs? Pleas Help Me.. Thx:)
Answer:
Heterotroph
Explanation:
They require other sources to sustain themselves and cannot produce their own energy.
Answer:
Heterotrophs
Explanation:
Producers are the most common type of autotrophs because they are able to make food out of energy and any other materials they happen to find or lie upon. Humans cannot create food from energy because they are not producers.
Heterotrophs are organisms that eat consumers or producers. A human can eat other consumers (meat/omnivore) and eat plants (producer) like lettuce or kale.
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All human body cells contain 46 chromosomes. However, sperm cells in men and egg cells in women have only 23 chromosomes. This is due to meiosis. How does meiosis accomplish the reduction in chromosomal number?
Answer:
Two cell divisions after DNA replication
Explanation:
After the DNA is replicated, the cell undergoes two rounds of meiosis to produce 4 cells, each wIth 23 chromosomes. This is how the cell goes from a diploid to a haploid state.
What is the process called that takes sunlight, carbon dioxide and water to make sugar and oxygen?
Answer:
Photosynthesis
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
Answer:
Photosynthesis
Explanation:
A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years?
Answer:
not 8.000
Explanation:
y
Answer:
80 years
Explanation:
edg 2020
A population distribution shows _______.
a.the distribution of age groups within a population
b.the amount of organisms in a unit area
c.the total number of organisms in a population
d.where and in what arrangement organisms are located
Answer:
D
Explanation:
Think about the definition of “distribution “.
In a popular movie, a salt water fish jumped into a freshwater drain to be reunited with his father.
Using your knowledge of osmosis and solutions what would have really happened to the cells in the
fish?
А
The cells would have expanded and burst because of water entering the cells.
B
The cells would have shrunk as water left the cells.
с C
The cells would have remained the same as the freshwater is isotonic.
D
The cells would have become freshwater cells until reaching the ocean.
Answer:
A
Explanation:
fresh water is hypotonic to the fish cell,that means water will diffuse into fish cells by osmosis because a hypotonic solution contains low solute concentration.
Which protects nerve endings at the ends of fingers and toes?
joints
hair
nails
muscle
Answer:
nails ez pe ze
Explanation:
edg 2020 and i smart
Answer: C
Explanation:
Which of these best describes air pressure?
a
b
amount of pressure exerted in the atmosphere due to the movement of earth
amount of pressure exerted by dust particles in the atmosphere
amount of pressure caused by volcanoes and wildfires in the atmosphere
amount of pressure in the air caused by gravity and matter moving on all objects
h
Od
Question 2 (1 point)
Answer:
it would be (d) amount of pressure in the air caused by gravity and matter moving on all objects
Explanation:
d. amount of pressure in the air caused by gravity and matter moving on all objects.
Air pressure:The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. As the pressure decreases, the amount of oxygen available to breathe also decreases. Atmospheric pressure is an indicator of weather.Thus, the correct statement that describes air pressure is the amount of pressure in the air caused by gravity and matter moving on all objects i.e. option d.
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