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pychu [463]
3 years ago
10

I need help.... Cyanobacteria formed colonies called stromatolites. These used to be plentiful. What role did they contribute to

the atmosphere?
Biology
1 answer:
frutty [35]3 years ago
5 0
Answer - Cyanobacteria aka Algae that contributed in creating O2 for the atmosphere as a byproduct thru Photosynthetic.

Reason - Of course Algae make up mainly the whole world in waters and they do photosynthesis to give off oxygen in the atmosphere.
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Which of the following is a function of stomata?
Vedmedyk [2.9K]


The most accurate answer is release water vapor.

Stomata are special pores in plants  found typically on the outer leaf skin layer called the epidermis. They consist of two specialized cells called guard cells that surround a tiny pore called a stoma.

Their main function is to allow water vapor and gases such as carbon dioxide and oxygen to move rapidly in and out of the leaf.

The word stomata means mouth in Greek because they allow communication between the  internal and external environments of the plant.

8 0
4 years ago
Pls help I need help ASAP THANK YOU​
vivado [14]

Answer:

C,A,D,B.

Explanation:

6 0
3 years ago
Complete hydrolysis of a nonapeptide gave 3 ala, 2 phe, 2 asp, gly, and ser. Reaction of the nonapeptide with Sanger's reagent (
Wewaii [24]

Answer:

Alanine is obtained as the first amino acid, taking into account that the reaction with the Sanger reagent hydrolyzes N- (2,4-dinitrophenyl) alanine. thus with the fragments of the partial hydrolysis they are organized to create a polypetidic chain

ala-asp-gly-ala

gly-ala-phe

phe-be-wing

be-wing-phe-asp

We obtain that the correct sequence of the peptide is "ala-asp-gly-ala-phe-ser-ala-phe-asp"

7 0
3 years ago
Which of the following invertebrates is most closely related to the vertebrates? Select all that apply.
-BARSIC- [3]

Answer:

I would say chordates. (Not absolutely sure so double check)

Explanation:

Chordates have a dorsal nerve cord, which is super close to a spinal cord. (Which vertebrates have.)

8 0
3 years ago
What system coordinates the bodys responses to stimuli ans sends messages to the rest of the body
k0ka [10]
Tge system that coirdinate and send message to the body is the nervous system
4 0
4 years ago
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