What evidence do we have that DNA exists?

Which characteristic would be most crucial in land that is to be used for farming? A. clear, distinct horizons with organic matter and mineral nutrients B. no horizon development with large mineral deposits C. large accumulations of organic matter D.

Question 11 Which of the following are missing from the food web shown below? 13 Killer whales Sea lions Salmon Baleen whales Herring Zooplankton Phytoplankton Decomposers Omnivores Predators Producers

For a substrate to bind to a particular enzyme what do you need

Where does most of the water vapor in the atmosphere originate?

When the water turns yellow which gas is most common

If the temperature of our oceans continues to rise, what possible long-term effect will this have on marine organisms? The geographic range of phytoplankton will decrease thus increasing the base of the marine food chain.

Are the youngest rocks found far from the mid-ocean ridges

Imagine there is a new species specific fishing regulation that mandates only adult fish of this species that are 75 cm or longer may be kept and shorter fish must be released.

In guinea pigs coat color is determined by a single gene with two alleles. A guinea pig from a true-breeding black strain is mated with a guinea pig from a true-breeding white strain. The F1 progeny are all black.

How do organisms obtain energy?