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kompoz [17]
3 years ago
13

Which of these is the beginning of the life cycle of stars with different initial masses?

Biology
1 answer:
tigry1 [53]3 years ago
5 0
The doppler effect, when used with light, produces a shift of frequencies to red. Well, no matter which direction you look, there is a shift to red! That means that the universe is expanding or moving away from us in every direction. The idea, is that this could only happen if all matter was once in a single point, and there was an explosion. This explosion from a single point is called the big bang theory. 
A nebula is a cloud of gases that can coagulate to become a new star.
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Which of the following statements regarding the endomembrane system is false? Which of the following statements regarding the en
myrzilka [38]

Answer:

The endomembrane system includes the nuclear envelope.

Explanation:

The endomembrane is composed by the endoplasmic reticulum (ER) and the golgi apparatus. Its main function is to synthesize proteins (rough endoplasmic reticulum studded with ribosomes) proteins can also be modified in the ER of pass to the golgi apparatus where they can be modified and sort to be packed in vesicles to be exported to different parts of the body, for example hormones.

the nuclear envelope only holds the DNA and it´s not involved in protein synthesis.

3 0
3 years ago
What is diffusion? Include in your explanation "area of high concentration" and "area of low concentration". Does diffusion occu
Luba_88 [7]

Answer:

Diffusion is the process of small molecules moving from a high concentrated area to a lower concentrated area. For example, in a crowded train station, when a train arrives, people move from the high concentrated area, which is the platform, and move onto the lower concentrated area, which is the trian.

Explanation:

The process of diffusion does not cost any energy, as it happens naturally, and would cost energy to go against it, like trying to go from the train into the platform costs more energy than just going with the crowd into the train. And only small molecules can do this without using energy. Large molecules, like starch, can't do this without using energy.(ATP) hopefully, this helped you, and it would mean a lot to me if you could give me brainliest!

3 0
3 years ago
Why is mitosis important to your body
Hitman42 [59]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ Mitosis is important for our body because mitosis makes our bodies grow and develop. Without mitosis, we wouldn't grow and our cells wouldn't be repaired or replaced.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

8 0
3 years ago
Read 2 more answers
Which of the following is a density-dependent factor?
sertanlavr [38]

Answer:

A

Explanation:

4 0
3 years ago
22. Label the organisms in the food web below as producer (P), primary consumer (PC), secondary consumer (SC),
Paul [167]

In the above food web green algae is the producer, periwinkle and microscopic animals are primary consumers; mussel, barnacle, dogwhelk and crab are secondary consumers; dogwhelk and crab comes under tertiary consumer; dogfish is a quaternary consumer.

What is a food web?

It is a natural interconnection of several food chains in a single ecosystem. Each food chain supplies energy and nutrients through the ecosystem. There are four food webs producer, herbivores, carnivores, omnivores and decomposers.

Here green algae comes under autotrophs(prepares their own food), periwinkle and microscopic animals are herbivores(depend on producer); mussel, barnacle, dogwhelk and crab are carnivores(depend on herbivore); dogfish is an omnivore(depends on both producer and carnivore).

Learn more about food web from the link given below:

brainly.com/question/2179?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ9

3 0
1 year ago
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