Before the Ordovician-Silurian extinction, the diversity of life on Earth was growing enormously due to _____.shallow, warm, continental seas
cold, glaciated oceans
unknown reasons
comets hitting the earth

Answers

Answer 1

Answer: The answer is shallow, warm, continental seas.

The Ordovician-Silurian extinction happened about 450-430 million years ago. Before the extinction, most multicellular organisms lived in the seas. It was a rich life in shallow, warm, and continental seas. The climate was favorable. Reef-forming corals, as well as the first true vertebrates, some fish, appeared. Trilobites and mollusks were diverse and rich. Green algae were common in the seas.

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Angiosperms do not need water for fertilization. Why?

Answers

Angiosperms don't need water for fertilization, because the pollen fertilizes the eggs by staying inside the cone scales,

Answer:

The answer is c) a pollen tube grows from the pollen grain into the ovary.

Explanation:

I got it correct on the quiz

Why do we need to destarch a plant

Answers

in photosynthesis experiment, the effect of the light will be observe during the starch production- thus you need to have a plant without a starch to observe if the starch is produced during photosynthesis. Letting the leaves of the plant deprived from light for 48 hours will be forced to use its reserved starch making the storage of the starch decrease.

1. How do organisms obtain and use the energy they need to live and grow?

Answers

Answer: Through their Respitory and Digestive Systems.

Explanation: Organisms breathe in order to get necessary oxygen into the body as well as consume foods and liquids in order to get all the other nutrients required to make energy. Energy is created with these nutrients through individual cells in a form called ATP.

They do this by a process called photosynthesis

A scientist is comparing the outer layer of an onion cell to the outer layer of a human skin cell. What is unique about the outer layer of the onion cell compared to the skin cell?

Answers

Answer:

contains cellulose.

Explanation:

The onion cell (and all plants for that matter) should have an extra layer around the cell known as the "Cell Wall" it offers more protection and helps support the plant. Human cells (and animal cells) do not have these cell walls they simply have a cell membrane while plants have both. also Plant cells are Square or rectangular while animal and human cells are round or ovalish in shape.

Choose a safe seafood choice for sushi. why is it safe?

Answers

Answer:

The safest fish to consume raw are tuna and farmed salmon. Mostly because they are the least likely to have parasite....!!

Zishan..!!

Final answer:

The safest seafood choice for sushi is fish that has been either frozen or cooked to eliminate the risk of parasites. Pregnant women and young children should avoid seafood with high mercury content and opt for fish low in mercury instead.

Explanation:

The safest seafood choice for sushi is fish that has been either frozen or cooked before eating. Freezing or cooking their meat kills worms and larvae that may be present, reducing the risk of infection. The United States Environmental Protection Agency recommends that pregnant women and young children avoid certain seafood with high mercury content, such as swordfish, shark, king mackerel, and tilefish, and instead consume fish low in mercury like salmon, tilapia, shrimp, pollock, and catfish.

Freezing or cooking seafood for sushi is important because it eliminates the risk of ingesting harmful worms and larvae that may be present in the meat. This helps to ensure food safety. Additionally, the accumulation of heavy metals like mercury and cadmium in certain seafood poses health risks, especially for pregnant women and young children. Choosing seafood with lower mercury content like salmon, tilapia, shrimp, pollock, and catfish is a safer option.

Overall, it is crucial to consider both the hygiene and health aspects when choosing safe seafood for sushi. Freezing or cooking ensures the elimination of potential parasites, while avoiding seafood with high mercury content reduces the consumption of harmful heavy metals.

Learn more about Seafood safety here:

brainly.com/question/33465394

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Compare the location of electrons according to Bohr's theory and to the current atomic theory

Answers

In Bohr's model, electrons traveled in fixed orbits around the nucleus of the atom, much like planets around the sun. However, resent discoveries have led to the new atomic theory, in which electrons are randomly in an electron cloud around the nucleus: more dense in some places than others.

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