A child falls off a bike and skins a knee. Which systems work together to heal the wound? O Integumentary, Immune, and Circulatory
Respiratory, Immune, and Digestive
O Integumentary, Immune, and Excretory
O Nervous, Immune, and Endocrine

What was the land like over 500 million years ago? what was under the sea?

Determine if the following statement is true or false. if true, choose true. if false, choose the rewording that is true. according to the law of independent assortment, alleles for each gene are inherited together so that they always stay together. according to the law of independent assortment, offspring express a combination of their parents' traits. according to the law of independent assortment, alleles for a characteristic split during meiosis and combine during fertilization. true according to the law of independent assortment, alleles for each gene are inherited independently so that no two alleles stay together.

Witch theory suggests all living things are made up of cell or cells