Plants exchange gas with the atmosphere. which statement accurately describes this process?
a. plants release carbon dioxide and take in oxygen through the stomata in leaves.
b. plants release oxygen and take in carbon dioxide through the xylem in leaves.
c. plants release carbon dioxide and take in oxygen through the xylem in leaves.
d. plants release oxygen and take in carbon dioxide through the stomata in leaves

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Donde se encuentra el adn nuclear en un organismo eucariota?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.