A food chain consists of grass, cows, and humans. If the grass field produces 86,000 kJm-2 year-1 of energy and the cows
contain 18,700 kJm-2 year-1 of energy then what is the trophic
efficiency?
A: 5%
B: 78%
C: 22%
D: 33%

Study this image which statement best describes the rock shown check all that apply

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

Several bodily responses are described below. for each response, determine what caused the change in homeostasis. body starts to sweat breathing rate increases amount of saliva produced changes body starts to shiver