In many plants, stomata are found only on the lower surface of the leaf. the most likely explanation for this fact is that
a. photosynthesis only occurs in the spongy mesophyll near the bottom of the leaf.
b. stomata are closer to vascular bundles that bring water into the leaf.
c. gravity plays a role in gas exchange.
d. water loss would be less on the shaded lower surface than in direct sun.

Which term best describes a community in which people work mostly in factories? a.agricultural. b.hunting and gathering. c.domesticated. industrial.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Twind is considered to be an abiotic factor because it.?