the correct answer is C) DNA contains the base uracil, while RNA contains the base thymine instead
Answer:
B. Human activities and natural events can damage the environment.,
Explanation:
Human activities are those activities carried out by a human being. The environment is being degraded daily as a result of the activities of man as well as natural occurrences e.g earthquake, tsunami, wild fire etc.
Human activities also called anthropogenic activities that damage the environment include sewage pollution, burning of fossil fuels, oil spillage etc. Hence, according to this question, human activities and natural events can damage the environment.
D, because flatworm don't use cellular respiration nor do they use photosynthesis or make their own food neither do humans, which leaves the D, which is true. :)
The nerves in her hand are transfering heat into the ice and the ice is transfering cold into her hand until they are the same tempature.
Answer:
B.air density
Explanation:
Updraft and downdraft is the upward and downward movement of air.
It caused by differences in air densities. There could be differences in air current due to the heat that occur in the ground during the day time which makes air above more warmer than the air below. The air above is less dense as it rises above it becomes cool.
It also occur when air current moves over mountains.
