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>
The answer is B
Commensalism is when one organism benefits, but the other organism is neither harmed or helped.
Answer:
1. Air warms, becomes less dense, it rises
2. Air cools down, increases density (becomes denser), it sinks
D-the mantle gives off heat that melts the rock
Answer:
Explanation:
Out of the 25 elements found in living things, 19 of them can be found in some organisms but not all.
There are 25 elements that living things on Earth need to survive. Out of all these 25 however, only 6 are needed by all living organisms universally. They include:
Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorus, and,
Sulfur
In conclusion, this means that 19 elements can be found in some living things but not all of them while 6 can be found in all of them.
