How can five nucleotide bases be used as instructions to generate 20,000,000 different species of organisms?

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?