Answer:
If for example food becomes scares for a group of birds they must now eat something else. these birds have two different beaks on large for the food currently going becoming spars and the other just small enough for them to eat the smaller nuts and survive. The birds who can not eat the small nuts will die and then the small beaked birds will become more abundant.
Explanation:
Answer:
A) purine
Explanation:
There are two ways for the synthesis of purines and pyrimidines:
- de novo synthesis-from basic simple units
- "recycling" synthesis-reuse of metabolites
Purines are synthesized directly on ribose sugar, in segments.
Pyrimidines are attached to the ribose after the synthesis of the base.
5-Phosphoribosyl-1-pyrophosphate (PRPP). is used for the synthesis of purine (ribose 5-phosphate reacts with ATP to form ribonucleotide).
Answer:
Tetrahedron Structure The chemical structure of silica forms a tetrahedron. It consists of a central silicon atom surrounded by four oxygen atoms, with which the central atom bonds. The geometric figure drawn around this arrangement has four sides, each side being an equilateral triangle—a tetrahedron.
Explanation:
Answer:
A, D, and E is the answer
Explanation:
Got it right on edge 2021 <3
