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Alona [7]
3 years ago
11

Claim-Evidence- Reasoning (CER) Question: Are humans made of stardust?

Biology
1 answer:
miss Akunina [59]3 years ago
5 0
For decades, science popularizers have said humans are made of stardust, and now, a new survey of 150,000 stars shows just how true the old cliché is: Humans and their galaxy have about 97 percent of the same kind of atoms, and the elements of life appear to be more prevalent toward the galaxy's center, the research found.

The crucial elements for life on Earth, often called the building blocks of life, can be abbreviated as CHNOPS: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. For the first time, astronomers have cataloged the abundance of these elements in a huge sample of stars.
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Plants move water from the roots of the plant to the leaves through transpiration. As water evaporates from the leaf, cohesion p
adoni [48]

Answer:

Stomata are the organs present on the stem and leaves of the plant and help in the gaseous exchange and evaporating water present in the aerial parts of the plant. Mainly leaves stomata plays role in gaseous exchange and transpiration which is the evaporation of the aerial water of plants by opening and closing the stomata. Stomata are small pores mostly and normally present under the leaves and regulated by the guard cells, dum bell shaped cells to close or close it.

Other than closing and opening the stomata, stomata density also can affect the rate of gas exchange as well as transpiration. Stomata density is the presence of the numbers of the stomata per unit area. In heat or sunny area the stomata density is higher than the shady or dark area to increase the transpiration in order to cool down the leaves of the plant which prevent the chloroplast proteins to denature.

4 0
3 years ago
The _____ is a type of regulator protein that binds to a region of dna in the promoter of a gene called the operator and prevent
vivado [14]

The<u> repressor </u>is a type of regulator protein that binds to a region of DNA in the promoter of a gene called the operator and prevents transcription from taking place.

In the field of science, a regulator protein can be described as a kind of protein that affects the transcription of a gene by having an influence on particular DNA sites. The rate of synthesis of various proteins is controlled by the regulator proteins.

A repressor is a kind of regulator protein that prevents the transcription of a particular gene. When the rate of a protein in the body has reached normal, the transcription of the protein needs to be stopped in order for more protein of that kind to be formed. The repressor binds itself to the operator region for the gene, hence stopping the transcription process until the protein is required again.

To learn more about repressor, click here:

brainly.com/question/13799037

#SPJ4

6 0
1 year ago
Finger-like ends of the fallopian tubes are called
luda_lava [24]
<span>It is called the fimbriae.</span>
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3 years ago
HELP ME I WILL GIVE BRAINIST AWANERR AND On a separate sheet of paper, choose three animals, one that lives in water, one that l
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Answer and Explanation:

Land - Lion

Water - Sealion

Flies - Bees

Lions have strong retractable jaws that help them eat their prey and that way they adapt to their enviroment.

The Sealion's thick, oily fur and a layer of blubber allow them to keep a high temperature in cold waters.  

A Bees body carries an electrostatic charge that attracts pollen and that way they can keep it in them.

Hope this Helps! Have a GREAT day!

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An alpha-2-agonist that provides excellent sedation, muscle relaxation, and analgesia is
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Muscle relaxers physical therapy
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