There are four major classes of biological macromolecules:
carbohydrates.
lipids.
proteins.
nucleic acids.
I think it is D for mountains form from the movement of tectonic plates which create volcanoes that erupt and form mountains
Answer:
Photosynthesis a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities
they need sun water and CO2
Explanation:
Answer:
The evolution of the heart is based on the separation of oxygenated blood from deoxygenated blood for efficient oxygen transport. pisces have a dual chambered heartwhile reptiles and amphibians are having a three chambered finally aves and mammals have four chambered hearts.
Explanation:
please mark as brilliant answer
B is the answer, it wants me to type more so hehehhe
