What is the defining characteristic of a water cycle?
a. the water passes through at least five different locations.
b. it does not include any human water usage.
c. it passes through plants, animals and the ocean.
d. it has the same starting and ending point.

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

Which of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight