What is the source of the ebola virus in nature?
a) the source is unknown
b) the source is ticks or other arthropods
c) the source is monkeys and chimpanzees
d) the source is humans

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Which statement about factories in the industrial revolution is not true? a) some of the first advances were in textile mills b) spinning machines used water power c) water power was replaced by steam power d) coal was imported to english factories for power answer d) coal was imported to english factories for power

What is likely to happen in the long term if the earth continues to absorb more energy than it emits? a. the earth will discontinue recycling energy. b. organisms will begin to compensate for the change by incorporating more energy. c. the overall temperature of the earth will increase. d. the nutrient cycles will happen more frequently. select the best answer from the choices provided a b c d