Which of the following is not a characteristic of amniotic sac?
a-keeps the embryo from drying out
b-maintains a constant temperature
c-cushions and protects embryo
d-feeds the embryo

Which principle described by psychologist martin seligman fosters an overall positive attitude by using thinking and behavior techniques to resist negativity?

Foods that fill your body with sugar and fat but little else, are said to contain

Viruses ) manufacture their own atp, proteins, and nucleic acidsb) use the host cell to copy themselves and make viral proteinsc) use the host cell to copy themselves and then viruses synthesize their own proteinsd) metabolize food and produce their own atp