3. Mr. Jones is eighty-two. You would expect him to: A. Breathe about 12 to 16 times a minute.
B. Have a pulse of about 70 to 76 beats a minute.
C. Have high blood pressure like all old people.
D. Refuse to have his vital signs taken.

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

How does the nervous system affect the excretory system?