Persistent pesticides are those that
require repeated high-dose use for optimum effect.
retain their popularity among u. s. farmers.
do not break down quickly or easily, and therefore become concentrated in organisms high on the food chain.
possess the greatest chemical toxicity.

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

Many humans consume both plants and animals. these humans are considered to be which of the following? herbivores carnivores omnivores