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koban [17]
3 years ago
8

Which of the following is an example of an open system?

Biology
1 answer:
Crank3 years ago
5 0
A is the answer to this problem
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Why are dissolved oxygen concentration is high in the surface waters of the ocean.
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Answer:

oxegyen dissolves into the ocean from the atmosphere

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The surface water is usually saturated with oxygen

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What are 2 other differences between plant and animal cells besides cell walls?​
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. The main structural differences between plant and animal cells are the additional structures found in plant cells. These structures include: chloroplasts, the cell wall, and vacuoles. In animal cells, the mitochondria produces the majority of the cells energy from food.

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Which vessel carries deoxygenated blood away from the heart?
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which extinction period results in the evolution of the first mammals and dinosaurs appearing and forests of conifers and cycade
loris [4]

It was a life changing event. Around 66 million years ago, at the end of the Cretaceous period, an asteroid struck Earth, triggering a mass extinction that wiped out the dinosaurs and around 75% of all species.

Dinosaurs roamed the Earth in the Mesozoic Era, which is divided into the Triassic, Jurassic, and Cretaceous periods. They first arose during the Triassic period about 245 million years ago. Dinosaurs first appeared in the Middle Triassic and became the dominant terrestrial vertebrate in the Late Triassic or Early Jurassic, occupying this position for about 150 to 135 million years until their demise at the end of the Cretaceous. This era is popularly known as the "Age of Reptiles" and for good reason: reptiles, and particularly dinosaurs, were the dominant terrestrial vertebrate animals at the time. The PT extinction was the most severe in Earth's history, and was likely driven by intense volcanic eruptions and associated rapid climate change. This extinction decimated many early groups of reptiles and amphibians, and may have created environmental space for dinosaurs and other new groups to evolve.

To learn more about dinosaurs please click on below link

brainly.com/question/13863000

#SPJ4

5 0
1 year ago
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