Petroleum and natural gas form from a. heating and cooling of magma in underground chambers b. plant material that collected millions of years ago in swamps c. the decay of radioactive sediments under ground d. the remains of plants and animals buried in seas long ago

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

Talking listening and reacting non verbally are all part of communicating