Which of the following about the ozone layer is not true?
a. the ozone layer is formed in the stratosphere.
b. the ozone layer sustain life by absorbing a large amount of incoming uv radiation.
c. ozone in the troposphere is beneficial to living organisms.
d. depletion of the ozone layer can lead to an increase in skin cancer.

Short answer/constructed response: respond to the question in 3-5 complete sentences. give details or examples to support your answer. attempt to answer all parts of the question in paragraph form! using the source 1 map, pick two of the 1800's territorial acquisitions you believe were the most important in the development of the united states. provide at least two reasons per territory to explain why you think they were the most important.