Answer: that veins have valves to prevent backflow and arteries don’t.
Explanation:
Answer:
<em>Gamma radiation and X-rays .</em>
Explanation:
Gamma radiation and X-rays are electromagnetic radiation like visible light, radio waves, and ultraviolet light.
These electromagnetic radiations differ only in the amount of energy they have.
Gamma radiation is able to travel many metres in air and many centimetres in human tissue
Answer:
D) S is at the lowest level of organization.
Explanation:
Answer:
A) Products
B) Energy
C) Photosynthesis
D) Reactants
E) Oxidative phosphorylation
