Which of the following is the most abundant group of organisms on Earth?

a. protista

b. plants

c. bacteria

d. archaea

Why might a wide range of species be endangered by the pollution of an estuary?

An outbreak of a pathogen-caused illness occurs in a small neighborhood in a big city. Which of the following should investigators confirm first?

What are the characteristics of the inner planets? how do these vary from the outer planets?

Carbon monoxide prevents

Losing 100 orangutans a week is an astonishing number. Within your lifetime they could become extinct in the wild because of human impact. We use palm sugar in many products consumed and other things.

A bobcat feeding off of rabbits in the ecosystem is an example of commensalism competition mutualism parasitism predation

State the three basic premises of the modern cell theory

Mountains are usually formed by: movement of the earth's crust volcanic explosions placement of eroded land weathering away of land

Which property of water explains why seawater contains over 20 different elements?

Injuries and serious burns from hot glue guns can be reduced by what three simple precautions?