Which of the following would be a result of increased solar activity?

a. shorter summers
b. longer winters
c. colder-than-normal sea surface temperatures
d. warmer-than-normal sea surface temperatures

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different