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Temka [501]
3 years ago
12

5.2 learning the key term answer

Biology
1 answer:
e-lub [12.9K]3 years ago
5 0
What’s the question your asking ?
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Stars change over millions of years.<br>O True<br>O False​
SCORPION-xisa [38]

Answer:

true

Explanation:

stars can change bc Stars change over time. ... It is in the clouds of dust and gas that stars are born. As more and more of the gas (which is mostly hydrogen) is pulled together by gravity into a cloud, the cloud starts to spin. The gas atoms start to bump into each other faster and faster.

8 0
2 years ago
Which of the following structures: make energy for the cell
Anna35 [415]

Answer: mitochondria

Explanation:Animals and plants are made up of many complex cells called eukaryotic cells. Inside these cells are structures that perform special functions for the cell called organelles. The organelle that is responsible for producing energy for the cell is the mitochondria And cellular respiration.

6 0
3 years ago
Can someone help me? The question is State two scenarios that demonstrate the process diffusion​
gtnhenbr [62]

Answer:

One could be in the cell. The cell respires, thus producing carbon dioxide in it. So the concentration builds up in the cell. Diffusion is the net movement of particles from a region of high concentration to a region of low concentration, and the carbon dioxide concentration outside the cell is less, therefore the carbon dioxide molecules moves outs of the cell.

Another scenario is when perfume is sprayed into the air. The perfume particles collides with the air particles (lower or no concentration of perfume). This process goes on and on. This is diffusion since the concentration perfume particles collides with the less concentrated particles of perfume.

8 0
2 years ago
Plz HELP ASAP why cant you here sound on the moon
Tamiku [17]
You can't hear sound on the moon because of space. Space is a vacuum so you can't hear anything unless there is a medium for it to travel through (like air)
8 0
2 years ago
What is spirogyra in biology​
ehidna [41]

Answer:

Spirogyra is a genus of green algae that belong to the order Zygnematales. These free-flowing, filamentous algae are characterized by ribbon-shaped chloroplasts that are arranged in a helical manner inside the cells. So the name is derived from the spiral arrangement of chloroplasts in these algae.

Explanation:

4 0
3 years ago
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