Your skin regulates body temperature, protects, can detect pain, pressure temperature and touch, is involved in excretion and the synthesis of vitamin d. true or false?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48

Adding more tributaries to a local river basin can have what effect?