Which of the following statements describes and interaction between the atmosphere and the biosphere? A. Water and its vapor move through the air.
B. Earth’s internal heat warms the layer of air around it.
C. Oceans provide and environment for sustaining marine life.
D. Life is possible on earth due to the layers of air that surround it.

Which is true of the regious near earth equator

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.