Common characteristics supporting the idea that the first land plants were related to green algae include a. presence of chlorophyll b. cell walls made of cellulose c. alternation of generations d. all of the above e. a and b only

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

What type of cell division is used to replace old cell?