As elevation increases, temperature decreases. At which elevation will sound travel fastest? 2,000 meters
1,500 meters
1,000 meters
500 meters

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

What are the pros and cons of transect sampling?

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow