7th grade science need help

7th Grade Science Need Help

Answers

Answer 1

Answer:

The answer is B

Explanation:

Answer 2
the answer i believe is probably B

Related Questions

In the image below, which objects would have a greater gravitational force between them, Objects A and B, or Objects B and C? Give one supporting detail for your answer.

Answers

B and c

Its because heavier objects have a higher gravitational force

Answer:

Objects A and B

Explanation:

The Bigger the Object the more gravitational force, there is other thing that effect gravitational force but in this one it is size.

What is the density of a cube that has a volume of 3 cm3 and a mass of 12 g?

Answers

Answer:

0.25g

Explanation:

density= mass/volume

=3÷12

=0.25

All you have to do when finding density is cm3 divided by grams

Which is the source in variations in a population of organisms?
A. Changes in environment.
B. Changes in genes.
C. The interaction of genes with an environment.
D. The interaction of individuals with an environment.

Answers

Answer:

The change in environment

Explanation:

Because they need to adapt to live

A
Because organisms evolve to adapt to new environments

please help
Which sentence supports the fact that we always see the same side of the Moon?
The Moon takes about four weeks to rotate once on its axis and about the same time to orbit the Earth. The gravitational effect of Earth has slowed the rotational period of the Moon to match its orbit. Since the rotational period is exactly the same as the orbital period, the same portion of the Moon always faces Earth. As the Moon orbits Earth, the lit side that we see changes in size. These changes are called the lunar phases.

Answers

Answer:

Sentence 3

Explanation:

Sentence 3 states exactly what the question wanted for an answer, "Since the rotational period is exactly the same as the orbital period, the same portion of the Moon always faces Earth."

Answer: sentence 3

Explanation:

I can't find the answer for this what organ system is affected by albinism
plz help

Answers

primarily, albinism affects hair, eye, skin, and vision
In very rare cases a person's albinism is part of another condition that involves other health problems in addition to albinism. People with these types of albinism can have such health complications as bleeding, lung, bowel, and immune system problems.

Helloooooooooooooooooooooooooooooooo

Answers

Answer:

B.) Deposition

Explanation:

Deposit means to take something away and move it.

Answer:

A

Explanation:

I habe a big brain

PLEASE HELP 20 POINTS
Describe some of the main geologic events occurring during the Mesozoic era. This would include formation of mountains, opening of oceans, crunching continents, volcanic activity, major deposition of sediments, major structures eroded, etc:

Answers

Answer:

the branch of science and technology concerned with the properties of metals and their production and purification.

Explanation:

The branch of science and technology concerned with the properties of metal

Cystic fibrosis is a recessive gene disorder. The pedigree chart for a family known to have cystic fibrosis is shown below.

What percentage of the offspring either are carriers or have observable disease?

25%
50%
75%
100%

Answers

When half of the shape is black it means the person is a carrier. When the whole shape is black this means the person has the disorder.

d.100%

Cystic fibrosis is a recessive gene disorders the pedigree chart for a family known to have cystic fibrosis is shown below think 100 %

Life on Earth depends on a balance of photosynthesis and respiration.

Explain how the two processes work in a cycle.

Answers

The cycle of photosynthesis and respiration maintains the balance of carbon dioxide and oxygen on earth. Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. We breathe in that oxygen, which is carried through our blood to all our cells. In our cells, oxygen allows cellular respiration to proceed. Cellular respiration works best in the presence of oxygen. Without oxygen, much less ATP would be produced.
The person above has the correct answer

_________ are the four largest satellites that orbit Jupiter

Answers

Answer:

 Io, Europa, Ganymede and Callisto. 

Explain the process in which sedimentary rocks form

Answers

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding.

Answer:

Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding.

Explanation:

Heey may someone plz help me with these two questions thx!!!

Answers

Answer:

4 is d and 5 is a

Explanation:

This has to deal with dominant and recessive traits so if you don't know the answer please don't answer just to get the points. Btw if you have a question about the picture please comment it below my post.

Answers

Answer:

Heterozygous

Explanation:

Which choice is involved in both sexual and asexual reproduction?


spores


eggs


sperm


seeds

Answers

The correct answer is:

A.(spores)

I took the test, hope this helps!

The choice that is involved in both sexual and asexual reproduction is the spore that is presented in the first option, as the spore can be released by a wide variety of species, such as fungi, mosses, algae, etc.

What is the significance of the spores?

These are found in fungi, mosses, algae, and other organisms and can be released when needed, as they are reproductive cells important for the reproduction and survival of these organisms, such as fungi spores that aid in reproduction and survival in harsh environmental conditions. While most spores serve the same purpose, some spores indicate the air quality in the ecosystem.

Hence, the choice that is involved in both sexual and asexual reproduction is the spore that is presented in the first option, as the spore can be released by a wide variety of species, such as fungi, mosses, algae, etc.

Learn more about the spores here.

https://brainly.com/question/20849500

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A line graph shows?

A.changes in the dependent variable only
B.changes in the dependent variable only
C. how the dependent variable changes in response to the dependent variable
D. how the dependent variable changes on its own ​

Answers

C I am pretty sure :)

Two types of ocean movement, surface currents and deep water currents, result from which of these? *
(Note: Two of these are correct. You can only choose one.)

A. Temperature variations at different depths
B. The gravitational force from the moon
C. Large cargo ships pushing the water
D. Wind energy

Answers

Answer:

c i am pretty sure hope it helps

the answer is C: Large cargo ships pushing the water

30 POINTS!! PLEASE HELP ME ❤️❤️❤️❤️

Answers

Answer:

The king tide, also called a perigean spring tide, is caused by the sun and the moon aligning at just the right time such that the moon is closest to the Earth and the Earth is closest to the sun.

Explanation:

What is the molecule that is responsible? for albinism and colorblindness

Answers

The answer is melanin.

Mark me brainliest!

Answer:

melanin i believe

Explanation:

Summarize Darwin's theory of natural selection using the Galapagos tortoises or finches as an example.

Answers

Answer:

However, the Galapagos finches helped Darwin solidify his idea of natural selection. The favorable adaptations of Darwin's Finches' beaks were selected for over generations until they all branched out to make new species. These birds, although nearly identical in all other ways to mainland finches, had different beaks.

Explanation:

Darwin's theory states that advantageous traits increase survival and reproduction. Galapagos tortoises and finches have adapted to their environments.

What is Darwin's theory of natural selection?

Darwin's theory of natural selection is a fundamental principle in evolutionary biology. It states that the traits that provide an advantage to individuals within a population increase the likelihood of survival and reproduction. The process involves four key components: variation, heredity, selection, and time.

Within a population, there is genetic variation, meaning that individuals have different traits. Some traits may be advantageous, such as a thicker coat to survive colder temperatures or a longer beak to access food. Individuals with advantageous traits are more likely to survive and reproduce, passing their traits onto their offspring.

Over time, the frequency of advantageous traits increases within the population, leading to evolution. Natural selection is the mechanism that drives this process, allowing species to adapt and thrive in their environments.

Learn more about Darwin's theory, here:

https://brainly.com/question/25718754

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Which of these factors is involved in earthquake formation?

Answers

Answer:

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other.

Explanation:

a earthquake is formed when, two titanic plates rub together and then get caught on each other which creates a earthquake

Newton's Law Song Verse

You just listened to a song about Newton's laws of motion. Now, it is your job to create a new verse to this song. I need help

Answers

Explanation:

is this an actual question!?? lol!

Answer:

ohhhhhhhhhhhhh ok

Explanation:

Help please! Thank you! 2o points!

Answers

Answer:

wheres the attatchment

Explanation:

Answer:

the attachment isnt there

Explanation:

Plants get their energy from the Sun through photosynthesis. This energy is trapped in the bonds of the complex compounds the plants create from carbon dioxide and water. The plants are then eaten by animals, and the energy is used for heat and movement. Which of the following is an energy transfer that is conducted inside an animal in the above scenario?

Answers

Answer:

chemical energy to mechanical energy

Explanation:

The type of energy transfer that is conducted inside an animal is :

Chemical to Mechanical energy

Energy Transfer

Energy transfer is the conversion or movement of energy from one point to another. The energy stored in the plants are stored in the form of chemical energy, and as the animals consume the plants they absorb the chemical energy which is converted to mechanical energy for the production of heat and movement in animals.

Hence we can conclude that the type of energy transfer that is conducted inside an animal is chemical to mechanical energy.

Learn more about Energy transfer : https://brainly.com/question/7541718

Although male and female reproductive structures differ from one another in many ways, they carry out some of the same functions. Which of the following is a main function of both male and female reproductive systems?

Answers

Answer:

I think it's D.

Explanation:

It would be the last answer D, production of hormones. Both men and women are able to produce hormones. Hope that helped

Pleace and peace!!!!!!!!!!!!!!!!!

Answers

Answer:

Part a: C)

Part b: A)

Explanation:

a heterozygous (Rr) and a Homogenous (rr)

Part a: C)

There is only one out of 4 (Rr) so 1/4

A)

Answer:

C for part a

a for part b i think

Explanation:

Infer in 2004, a fossil of an organism that had fins and gills, but also lungs and wrists, was discovered. What might this fossil suggest about evolution?

Answers

Answer:

It suggest that over time the animal could have evolved to develop lungs to walk and breath on land and may or may not have lost the ability to breath under water as time goes on an it continues to evolve

Explanation:

Focus your answer on what causes a genetic disorder (be specific) and what happens from there. Use the terms below in your answer.

protein nucleus chromosome ribosome gene hemoglobin

Answers

Answer:

It is caused by mutations

In which direction is the moon revolving around the Earth?

Answers

Answer:

west to east

Explanation:

Viewed from above, however, the Moon orbits Earth in the same direction as our planet rotates. So, the Moon actually moves from west to east through our sky, albeit so slowly that we almost never notice it

Answer:

<<-----------

Explanation:

Helppppppppppppppppppppppppppppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

i think the answer is yellow?

it’s yellow :) if not then i’m not sure

What best explains the graph shown below?

A. Temperature is dropping because greenhouse gases are high and increasing


B. Temperatures are dropping because greenhouse gases are high and constant


C. Temperatures are dropping because greenhouse gases are low and constant.


D. Temperatures are dropping because greenhouse gases are low and decreasing.

Answers

Answer:

I say it is A

Explanation: Because gases can affect tempature.

A is the most probable answer
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