For the eighth observation (i = 8), identify the animal phylum, xi, and yi.

a) phylum Cephalochordata; xi = 33; yi = 68

b) phylum Urochordata; xi = 77; yi = 25

c) phylum Porifera; xi = 5.8; yi = 25

d) phylum Urochordata; xi = 25; yi = 77

What direct effect do histamines have on capillaries? a) They decrease the diameter of capillaries. b) They prevent phagocytes from sticking to the walls of capillaries. c) They allow capillary walls to open and become leaky.

2) Organisms categorized as osmoconformers are most likely A) found in freshwater lakes and streams. B) marine. C) amphibious. D) found in arid terrestrial environments. E) found in terrestrial environments with adequate moisture.

The scapula is the site of origin of a group of muscles that stabilize the shoulder joint. identify this muscle group. hints the scapula is the site of origin of a group of muscles that stabilize the shoulder joint. identify this muscle group.

List the three compounds of traditional cell theory

Which substance is considered a building block for all living things? hydrogen Oglucose O carbon O protein

Is a rotting log biotic or abiotic?

Hat type of substances are commonly transported into cells by channel proteins

Who received profits from a corporation? A. The employee B. The company officials C. The managers D. The shareholders

An ecosystem includes a. only exotic factors b. only biotic factors c. biotic and abiotic factors d. only abiotic factors

13. What is the name and function of the main lymphatic tissue found in the intestines? A. Thymus gland: enables the conversion of immature lymphocytes into mature T cells B.