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AleksandrR [38]
3 years ago
9

By the end of the ____ period, all major animal lineages were present in the seas due to a great adaptive rafiation of animals

Biology
1 answer:
natali 33 [55]3 years ago
6 0

Answer: cambrian

Explanation:

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Which biological molecule contains a large amount of the element nitrogen? A) carbohydrates B) lipids C) proteins D) starches
Jlenok [28]
The correct option is C, PROTEINS.
Protein are macro molecules which are made up of units called amino acids. There are twenty different amino acids, each with a unique R group. The elements find in protein include carbon, oxygen, nitrogen, etc. Nitrogen is one of the most important constituent of proteins. <span />
7 0
3 years ago
What is special about nitrogen, and what is its main function in the atmosphere
inna [77]
Nitrogen is the most abundant of the gases present in the atmosphere. 78 percent of the atmospheric air comprises of nitrogen, oxygen makes up for 21 percent and all other gases make up for the remaining one percent. Oxygen is a highly flammable gas and in the absence of nitrogen it would not have been possible to utilize this atmospheric oxygen, hence the presence of nitrogen reduces its flammability and also neutralizes the toxicity of other gases. Another way to explain this question is - The vital thing about Nitrogen is that it gives air to people to take in, 78% of the air we take in is Nitrogen and just 21% is oxygen, 1% is different gasses. On the off chance that the air was unadulterated oxygen then everything would be to a great degree flamable, and it would likewise be hurtful to people. Nitrogen assumes a vital part in our lives. Oxygen can be poisonious on the off chance that it was the main gas noticeable all around... Nitrogen is too much critical, else we would all die.... Also, I seek oxygen stays 21% after it can be hazardous. Definitely, you ought to realize that Nitrogen can likewise be risky in A few ways, you can look that up and take in more about it, however at this moment we're looking at something else and I would prefer not to be insignificant by any stretch of the imagination, so I'll simply adhere to the Inquiry on the point as apose to the Entire whole theme. I know I have addressed your inquiry, and I believe this was useful.

Hope this helps
8 0
3 years ago
What do we call the study of the body structures we can see with our eyes?
Y_Kistochka [10]
Physical structures..........
4 0
3 years ago
Help?! (There is two screenshots with 1 question on both)
Gelneren [198K]

with the prey there is always going to be something that is going to eat them it is called the food chain

7 0
3 years ago
Mitosis can occur in both haploid and diploid cells, but meiosis cannot occur in haploid cells. Why not?.
allochka39001 [22]

Mitosis can occur in both haploid and diploid cells because it is equational division where the number of chromosomes remain the same after division. But meiosis cannot happen in haploid cells because it is reductional division and haploid cells do not have any extra copy of chromosomes to be halved.

Mitosis is the cell division where the number of chromosomes do not change after cell division. It usually happens in the somatic cells of the body. Cancer cells also undergo mitosis

Meiosis is the cell division where the number of chromosomes are halved after cell division. The process of meiosis occurs in two phases: meiosis I and meiosis II. The germ cells of the body undergo meiosis.

To know more about mitosis, here

brainly.com/question/26678449

#SPJ4

4 0
1 year ago
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