What are many complex questions related to public policy, law, ethics and societal impact?

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.

Weak stimulus will cause a weak action potential. the stronger the stimulus, the stronger the action potential. a. true b. false

Why is it essential to operationally define the variables in a study?