Answer:
J the appearance of photosynthetic organisms
Answer:
Science is a process of observation and experimentation
*The rate at which radioactive decay occurs.
*How much radioactive decay has occurred.
Answer:
chloroplasts
Explanation:
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
