Answer:
In compound with other elements.....
Answer:
I would say C (Modern technology enables scientists to get an accurate description of the ocean floor). But if it's not C then it's D. I didn't see "Seabed 2030" mentioned in it so that's why I say C but I could be incorrect.
Biomolecules are important for living organisms and vital for cell structure and functioning. The cells are made up of biomolecules as their structural organization.
The four most abundant biomolecules are:
<u>Carbon, Oxygen, Nitrogen and Hydrogen</u>
The biomolecules can be explained as:
- The central biomolecules for life activities are these elements that contribute to major processes.
- The main building blocks like carbohydrate is composed of carbon, oxygen and hydrogen. They provide energy to the body by breaking into small molecules.
- Proteins are vital for cell signalling and transport. They are composed of amino groups consisting of nitrogen.
Therefore, carbon, nitrogen, hydrogen and oxygen are the most abundant biomolecules.
To learn more about biomolecules follow the link:
brainly.com/question/15157257
Answer:
D. It controls the entry and exit of substances.
Explanation:
The cell membrane provides protection for the cell, transporting nutrients in and carrying toxic substances out.