People with blood type O are considered to be universal donors. That is, they can
donate blood to all other blood types. Using your knowledge of blood types and the immune
system, explain why this is true.

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

The tubes transporting minerals and water upward are called ?

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers