The value of acceleration due to gravity on the surface of earth is:
8.9 m/s2
7.8 m/s2
9.8 m/s2

What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b. a light particle

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?