When the Southern Hemisphere is in Spring, what is the Northern Hemisphere in?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

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