Which of the following statements is BEST supported by the phylogenetic tree? А The development of a bony skeleton was a significant evolutionary step for ocean- dwelling animals. Most warm-blooded animals evolved to have hair while cold blooded animals did not Most land animals require a vertebral column while ocean animals do not DThe evolution of the amniotic egg was specific to ocean - dweling animals

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.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above