The answer is D
Explanation: You need to have the same number of complementary bases.
Climate is the biggest one, if it were anything else it would be like the type of ground (kind of like mountains or a valley.) Hope this helps!
D. They make their own food using energy from the sun. Trees use a process called photosynthesis to convert light energy from the sun, carbon dioxide, and water into glucose (the food) and oxygen.
Also may decline with age in older adults as a result of the yellowing of the lens of the eye. Decline is most likely to occur in the green blue violet part of the color spectrum. Result is trouble accurately matching closely related colors.
