Why does crab grass do so well when ordinary grass struggles in late summer? Is this a phenomenon? Or is this based on a scientific principle? If so, what is it that causes crab grass to thrive in relation to the different type of plants?

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit

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

Can a trait be both polygenic and have multiple alleles? explain why or why not.