Which is an effect of the ozone depletion over Antarctica? A)
loss of phytoplankton, the microscopic marine organisms that are the basis for the entire food chain
B)
increase in the incidence of skin cancer as a result of UVB radiation
C)
increase in damage to eyes leading to cataracts
D)
extensive DNA damage in the eggs and larvae of Antarctic fish
E)
all of the above

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

Select the word from the list that best fits the definition a system made of 25 satellites

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?