This rock is made from sand and pebbles joined together. the rock formed in a riverbed. it is an example of
a. igneous rock
b. metamorphic rock
c. sedimentary rock

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

What is a group of organisms that are closely related and share similar characteristics