Answer:
Protein
Explanation:
Protein are organic molecules that contain carbon, oxygen, nitrogen and hydrogen. They are one of the major constituents of living matter which contain long chains of amino acids that are linked together by polypeptides bonds. The protein has a monomer that are amino acids which are contain carbon central atom and carboxyl ground which contain hydrogen and oxygen.
Answer:
Nervous system
Explanation:
The nervous system in humans work together to collect information about the external environment because they consist of the brain, spinal cords and neurons. They collect information from external environment and those information travels through neurons from sense organs like eyes, ears, skin e.t.c as a form of electrical impulses. When they get to the end of the neuron, a chemical called neurotransmitters are released which travels across the cells and send it to the brain, the brain then process it and interprete the signals and respond to it as stimulus.
The body can decide the nutrients it needs
Answer:
A. Osmosis allows large molecules to move from an area of a high concentration to a low concentration.
Explanation:
One of them is Vertebrates which are the animals that have a backbone like mammals, birds, and amphibians.
The other one is a invertebrates which are animals that don't have a backbone, for example insects do not have a backbone and also some marine animals like the squid.
I hope this helped :)
