Describe the positive and negative interactions that affect populations in the tundra ecosystem.

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

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation