Which of these objectives do you feel like you've accomplished so far? A. Define natural selection.
B. Explain the relationship between adaptations and natural
selection.
C. Describe when natural selection occurs.
Select one or more answers
D. Explain the relationship between evolution and natural selection

Which statement is true regarding weathering in dry environments? a) chemical weathering is absent because of a lack of humidity. b) physical weathering is usually more evident than chemical weathering. c) it is impossible to identify the type of weathering that has occurred. d) physical weathering does not play a significant role in dry environments.