The ocean has many different ecosystems, or communities of living organisms and their environment. Life in the ocean is more diverse and plentiful than on land. In fact, the very first life on Earth, a microscopic single-celled organism, probably started in the ocean 3.5 billion years ago. About 80% of all marine organisms live in the euphotic zone. This is the top layer of the ocean, from the water’s surface down to about 100 meters. The euphotic zone is also known as the sunlit zone. It gets enough light for plants to undergo photosynthesis, or convert the sun’s energy into food. It contains vibrant ecosystems such as coral reefs, mangroves, kelp forests, and estuaries. Food and shelter are plentiful in the euphotic zone, which is home to most ocean fish, jellyfish, sea turtles, seals, coral, starfish, and shellfish.

Why is marine life so plentiful in the euphotic zone?

A
This zone is at the very bottom of the ocean, so fish can absorb minerals from the sand.

B
This zone provides enough light, food, and shelter to support a wide variety of organisms.

C
This zone is home to all plants and animals that do not need sunlight to survive.

D
This zone is used as farmland, growing crops that fish and other sea organisms eat.

He did not infringe upon the policy making powers that he felt the constitution gave congress. but the determination of foreign policy became preponderantly a presidential concern. when the french revolution led to a major war between france and england, washington refused to accept entirely the recommendations of either his secretary of state thomas jefferson, who was pro-french, or his secretary of the treasury alexander hamilton, who was pro-british. rather, he insisted upon a neutral course until the united states could grow stronger. which provides the best objective summary of this excerpt? president washington made a good choice when he decided not to accept the recommendations of his advisors and instead insisted that the united states stay neutral during the war between france and england as president, washington believed that the united states should remain neutral in foreign policy even though he had advisors who recommended that he take sides during the war between france and england. washington did not make policy decisions during his presidency because he did not want to interfere with the policy-making powers that the constitution gave congress. washington refused to accept entirely the recommendations of either his secretary of state thomas jefferson, who was pro-french, or his secretary of the treasury alexander hamilton, who was pro-britis

The process of meiosis produces only gametes, eggs or sperm. according to the diagram, how many sperm are formed from each cell that undergoes meiosis?

Anonnative species is best described as a species that a. does not normally live in an area b. has no permanent home c. is a poor predator d. increase biodiversity