The case of a plant having nitrogen-fixing bacteria in its roots is an example of:

endosymbiosis

parasitism

mutualism

none of these

Pick all the characteristics below that describe compounds two or more elements chemically combined elements one type of atom cannot be separated into a simpler form definite proportions

How does the process of meiosis lead to greater genetic variability

what is the function of a circulatory system It brings a transport liquid into close contact with all cells in the body Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

What must the net force be equal to in order for the forces on an object to br balanced?

Which is more likely to contain organic compounds? A. Seawater B. Air and other gases C. Living things D. Rocks and sand

Why are phytoplankton essential to aquatic life zone?

As described in lecture, cells form actin filaments in particular regions of the cell in part because they nucleate filament formation at particular times and places within cells and in part because they inhibit the formation of filaments that are

What is the main difference between the gas water vapor and the liquid water? A The molecules of water vapor are much smaller than those of liquid water. B Liquid water is made out of different molecules than water vapor is.

Which outcome occurs when bonds between atoms are broken or formed? A. a physical change B. an element increasing in size C. a chemical change D. a change of state

What events caused the formation of most islands in the South Pacific?