Which of the following describes a cyclical change in an ecosystem?
a. an area receives less rain each year for many years.
b. the water level in lake ontario peaks and dips every few years.
c. coyotes migrate to an area where no coyotes lived before.
d. a population of juniper trees is replaced by poplar trees.

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Lactic acid and energy are produced in muscle cells during choose 1 aerobic respiration cellular respiration anaerobic respiration cellular division

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation. a. false b. true