Since there are no choices to choose from, I'll just site all the structures of the leaf with its role then.
A Leaf has the following structures:
Cuticle
Upper epidermis layer
Palisade layer
Xylem
Phloem
Spongy mesophyll layer
Air space
Lower epidermis layer
Stomata
<span>Guard cells</span>
Answer:
The cellular level of an organism is where the metabolic processes occur that keep the organism alive.
Explanation:
Answer:
The brain and spinal cord are your body's central nervous system. The brain is the command center for your body, and the spinal cord is the pathway for messages sent by the brain to the body and from the body to the brain.
Answer:
joining small molecules together to form long chains
Explanation:
plastics are actually polymer which is made by joining small units know as monomer. for e.g butene ethanol
