Carbon is released to the atmosphere by

a respiration and burning of fossil fuels and wood
b burning of fossil fuels and photosynthesis
c respiration and fixation
d respiration and photosynthesis

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

Will ! a cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. assume the cell’s membrane is permeable to water, but not permeable to the sucrose. where will the water diffuse? explain.

What is the difference between hypothesis, theories, laws, and observations?