What is nitrogen used for in plants? A. photosynthesis
B. respiration
C making protein
D. making glucose

Plants use nitrogen for making protein since proteins are rich in it because of the amino group of the amino acids.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.