9. There are many sources of variation that occur in nature. Explain what could have caused the variation in color within the mouse population.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.