Which activity produces the smallest amount of greenhouse gases?
a.
driving a car
b.
riding a bicycle
c.
cooking with gas
d.
operating a generator

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.

Gram-negative bacteria have a cell wall that is! and does not accept the stain, making itappear