Which of these is used to find the precise age of a rock? (1 point) Index fossils Radioactive dating Relative dating Stratified rock layers

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

On his trip to the galapagos islands, darwin determined that animals on the islands

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.