A10.00 centimeter 3 sample of copper has a mass of 89.6 g what is the density of the copper i am stuck i am in the fourth grade and i do not understand this my teacher gives us hard work

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

How will you manage your time to accomplish the necessary tasks both on the job and at home?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?