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Ierofanga [76]
3 years ago
7

Samples for a compound light microscope are typically prepared on _______.

Biology
1 answer:
yKpoI14uk [10]3 years ago
3 0
A, I think cuz we used glass slides in my high school for microscopes.
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I WILL GIVE BRAINLIEST
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Answer: True

Explanation: I'm 1000% sure I know it's right.

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11. If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?
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The answer is hox gene.

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3 years ago
What are the two main ways a star can live based on it mass?
Andrej [43]

Answer:

Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive.

Stars start their lives as clouds of dust and gas. Gravity draws these clouds together. A small protostar forms, powered by the collapsing material. Protostars often form in densely packed clouds of gas and can be challenging to detect.

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Smaller bodies — with less than 0.08 the sun's mass — cannot reach the stage of nuclear fusion at their core. Instead, they become brown dwarfs, stars that never ignite. But if the body has sufficient mass, the collapsing gas and dust burns hotter, eventually reaching temperatures sufficient to fuse hydrogen into helium. The star turns on and becomes a main sequence star, powered by hydrogen fusion. Fusion produces an outward pressure that balances with the inward pressure caused by gravity, stabilizing the star.

How long a main sequence star lives depends on how massive it is. A higher-mass star may have more material, but it burns through it faster due to higher core temperatures caused by greater gravitational forces. While the sun will spend about 10 billion years on the main sequence, a star 10 times as massive will stick around for only 20 million years. A red dwarf, which is half as massive as the sun, can last 80 to 100 billion years, which is far longer than the universe's age of 13.8 billion years. (This long lifetime is one reason red dwarfs are considered to be good sources for planets hosting life, because they are stable for such a long time.)

Explanation:

I hope this helped!

3 0
3 years ago
Read 2 more answers
If you get it right I will give brainliest. Please Help ASAP
Kitty [74]

Answer:

thermal

nuclear

magnetic

gravitational

chemical

mechanical

elastic

I think I'm sorry if it's wrong:(

4 0
3 years ago
Can anyone help me with this? I've been stuck for a long time.
noname [10]
They all have pollen in the center which makes them duplicate and make more of their species of flower
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