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valentinak56 [21]
4 years ago
14

Which defines background extinction?

Biology
1 answer:
victus00 [196]4 years ago
4 0

Answer:

<em>The correct option is D) the natural extinction rate</em>

Explanation:

Extinction can be described as a process due to which species get removed from the world.

Background extinction can be described as the standard rate of extinction of organisms of a species due to ecological or environmental factors. It is a low-level type of extinction which occurs over a long period of time. It can be described as the natural extinction rate of individual organisms. Hence, option D best describes the natural phenomenon of background extinction.

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How does the structure of abone make it strong yet lightweight?
rusak2 [61]

Answer:the component materials and their arrangement

Explanation:

Bone are important for movement in animals.bones is made up of 15% water,30% collagen fibres and 55% mineral salts..bone cells are widely separated. The Collagen makes bones soft and flexible. Mineral salts makes it fragile and strong.

The osteogenic cells builds the bones and the osteoclasts breaks down older bone tissue, in order to keep the body strong.

Spongy bones contains tiny spicules that helps in strength.

It also reduces the weight of the bones .

The cells of Compact bones are arranged in the direction of stress to keep the bone strong.

They are constantly changing throughout life

4 0
3 years ago
2. How well do you think scientists can predict where a volcano will erupt?
masya89 [10]
Volcanologists can predict eruptions—if they have a thorough understanding of a volcano's eruptive history, if they can install the proper instrumentation on a volcano well in advance of an eruption, and if they can continuously monitor and adequately interpret data coming from that equipment.
6 0
3 years ago
Interpret grendel's observations of humans. how is this a satirical commentary on human society?
Goryan [66]
<span>Grendel seems to find the violent tendencies of humans as illustrated in their fighting among groups, as more primitive than that of animals. Ironically, while Grendel himself will kill and eat a human, he does not organize into groups with others of his ilk and seek to hunt humans as they do to one another in war-like behavior masking their covetous motivations.</span>
5 0
4 years ago
Which of these energy resources is estimated to be the most abundant?
suter [353]

Answer:

The correct answer is b=coal

Explanation:

Hello ! Let's solve this!

The most abundant energy reserve is the coal. It is used as fuel.

The rest of the resources are not so abundant. Oil, gas hydrates and natural gas.

The correct answer is b= Coal

6 0
3 years ago
Read 2 more answers
Agnatha are what because they live off the blood of other fish
Natalija [7]

Answer:

They live off of the blood of another fish, they must have a host, so that makes these fish parasitic.

Explanation:

3 0
2 years ago
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