Underground mammals such as the ancestors of moles are thought to have first evolved as the dinosaurs died outWhich effect of environmental changes does this best illustrates migration loss of habitat change in behavior speciational

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

well the answer is 2!

the growth of the plants is affected by the heat of the light. what is the student doing?