Why are there limited levels of consumers? For example, apex predators are usually tertiary or quaternary consumers. Why don't we have many 5th, 6th, or 7th level consumers?

Below are some different scenarios for the heritability of a trait and the selection differential in a population. which scenario will produce the largest response to selection?2

What are the main kinds of blood vessels and what functions do they perform?

Explain how energy flows through an ecosystem and why the available energy decreases between trophic levels.

Categorize each relationship as mutualism or parasitism

The review of systems is a (n) a. physical examination of all body regions. b. review of the health history of all family members. c. inventory of body systems conducted through a series of questions. d.

The catalytic efficiency of many enzymes depends on pH. Chymotrypsin shows a maximum value of kcat/KM at pH 8. Detailed analysis shows that kcat increases rapidly between pH 6 and 7 and remains constant at higher pH.

What type of bond forms between a slightly positive hydrogen atom in one molecule and a slightly negative atom in another molecule

What type of soil permeability is most desirable for agricultural land? very slow rapid moderate?

What feature of alcohol fermentation makes it more suitable for the baking process than lactic acid fermentation? A. Alcohol fermentation is a faster process than lactic acid fermentation. B.

What are the two zones of an aquifer? a.) capillary fringe and water table b.) zone of saturation and zone of unsaturation c.) zone of aeration and zone of unsaturation d.) zone of unsaturation and water table