Jack is seeing an onion cell under a microscope. he observes formation of a cell plate. he is observing which phase of the cell cycle?

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Which is one example of a phenotypic change that is not genetic

Which direction does the energy flow in this energy pyramid ?