The major types of ecosystems in the world, each comprised of a characteristic array of plant and animal life, are called A. biotic environment
B. biomes
C. ecotones
D. physical ecosystems

An easy way to calculate the amount of energy available at each level is to what?

Antoine manages a number of apartment buildings that use natural gas for heating, cooking, and laundry. the scatter plot shows the correlation between the outside air temperature and antoine's natural gas bill. which type of correlation does the plot illustrate?

Select the correct answer.what is the observable characteristic of a person called? o a. genotypephenotypeoc.alleleo d.gene