What kind of behavior is being demonstrated when a bird feeds its young? a. migration c. courtship b. estivation d. parenting

What are the four basic classes of organic molecules how do they differ structurally and functionally

Which of the following is not a defining characteristic of plants?

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm