PHYSICS MIDDLE SCHOOL

How is a habitat different from an ecosystem?

Answers

Answer 1
Answer: The answer to ur question is Habitat the natural home or environment of an animal, plant, or other organism and ecocystem is a biological community of interacting organisms and their physical environment.
Answer 2
Answer: The habitat can be a place where Simone with keep their food and all that and an ecosystem is where you can leave and not worry about your past there

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Explain how plants and algae use sunlight. how is this process important to other living things in an ecosystem ?

Answers

Plants and algae use sunlight to make food. They do this with the process of photosynthesis, and they create excess oxygen as a waste product. The oxygen is vital for other living organisms to survive and perform their daily functions. Hope this helps :)

A pencil is dropped from the roof of the school what is the speed after 3s down is the negative direction.I'm confused on what equation to use

Answers

On Earth, the acceleration due to gravity is (-9.8 meters per second) per second.

If the school, the roof, and the pencil are on Earth,
then after 3 seconds, the pencil's speed is

[ (-9.8 meters per second)/second ] times [ 3seconds ] = -29.4 meters per second
you have to use 1st equation of motion v = u +at as distance(s) is not given.....
as pencil is dropped from rest therefore u = 0m/s and accleration due to gravity is = -9.8 m/s
v = 0 - (9.8)(3)
v = -29.4 m/s

Please help!!!!!!!!!!!!!

Answers

Answer:the answer is d

Explanation:
I believe the answer is letter B

Which of these elements is least likely to react with other elements<br /><br />A. calcium<br /><br />
B. Argon<br /><br />
C. sodium <br /><br />
D. Nitrogen<br /><br />
E. Oxygen<br /><br />
F. Chlorine

Answers

B. Argon because it is a noble gas and has 8 valence electrons. Noble gases are very very stable and rarely react with other elements.

What could you do to change the volume of a gas?

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The ONLY way to change the volume of a sample of gas is to transfer it to a container with different volume.
Simply changing its temperature or pressure in the same jar won't do it. Any amount of gas always fills whatever container you keep it in.

Which properties change the composition of a substance?chemical properties


neither chemical nor physical properties


physical properties


chemical and physical properties
HELPPPPPP

Answers

Answer:

chemical properties because physical properties only change the way an object looks
Chemical properties
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