One of the three main functions of stems is to a
carry out photosynthesis.
b
store carbohydrates.
c
store water.
d
carry water and nutrients between roots and leaves.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2