when you lift weights your arms bulge and your brain signal them to lift despite the resistance which to organ systems are working together to raise the weights?

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

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.

Describe characteristics of a good respitory surface