Charles darwin developed the theory that explains how new species develop based on evidence from many different kinds of scientific inquiry. darwin’s theory can only be accurate if the earth is very old. the scientists who provided evidence for the earth’s old age were  most likelyastronomers such as edwin hubble. geologists such as james hutton. biologists such as francis crick. physicists such as marie curie.

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.