Where can we see evidence of how life changed over time?

Which plant-cell organelle supports and maintains the cell's shape and protects the cell from damage?

Darwin developed the theory of evolution why there are so many different kinds of living things. he could easily observe that offspring of any animals were slightly different from their parents and that this could allow big changes over thousands of

As a submarine gets closer to the bottom of the ocean

Why must organisms of the estuary be adapted to varying levels of salinity? A. Fresh river water flows into the estuary B. Saline ocean water flows into the estuary C. Ocean tides increase and decrease the amount of ocean water D. All of the above

How do the resulting cells, from each round of mitosis, compare with the starting cells of that round in terms of chromosome type? Number of cells?

The process of transducing air pressure waves into neural messages that the brain interprets as meaningful sound is known as

Why does photosynthesis require water? a. because water provides oxygen atoms. b. because water provides electrons. c. because water accepts electrons. d. because water acts as a catalyst.

An education guess or rational explanation about a specific phenomenon

What are the technical name for red blood cells white blood cells and platelets?

What are the resources of the ocean