Aerobic exercise leads to stronger muscles that sustain activity for short periods of time.

Which of the following systems in absorbing oxygen and releases carbon dioxide

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.

What is the primary goal of human communities?