Which of the following is a biotic aspect of an organisms niche
a. the water in the area
b. the food it obtains
c. amount of sunlight
d. amount of sand in the soil

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Explain how scientists use geologic time to determine the age of landforms.