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Mila [183]
3 years ago
7

Which of these best describes extinction events?

Biology
2 answers:
SpyIntel [72]3 years ago
7 0

Answer: D. Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted.

cupoosta [38]3 years ago
4 0

Answer:

Extinctions occur at higher rates during times of ecological stress when populations and species are poorly adapted

Explanation:

Evolution has made it known to us that organism goes to extinction as a result of changes in ecological stress without being able to adapt by this organism to the new changes, hence; leads to extinction.

Charle's darwin theory of natural selection discuss about '' survival of the fittest'' when an organism fails to survive during harsh environment changes, it leads to extinction of such organism. Dinnosaur were able to go into extinction as a result of environmental changes which they are unable to adjust, thus; they went to extinction.

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What is photosynthesis
Nikolay [14]

Answer:

It is the process where the plants use sunlight to gain their food.

Explanation:

Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Hope this helps!

5 0
2 years ago
Read 2 more answers
What are convergent boundaries?
boyakko [2]

Answer:

Explanation:

A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone.[1] These collisions happen on scales of millions to tens of millions of years and can lead to volcanism, earthquakes, orogenesis, destruction of lithosphere, and deformation. Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere. The geologic features related to convergent boundaries vary depending on crust types.

Plate tectonics is driven by convection cells in the mantle. Convection cells are the result of heat generated by radioactive decay of elements in the mantle escaping to the surface and the return of cool materials from the surface to the mantle.[2] These convection cells bring hot mantle material to the surface along spreading centers creating new crust. As this new crust is pushed away from the spreading center by the formation of newer crust, it cools, thins, and becomes denser. Subduction begins when this dense crust converges with less dense crust. The force of gravity helps drive the subducting slab into the mantle.[3] As the relatively cool subducting slab sinks deeper into the mantle, it is heated, causing hydrous minerals to break down. This releases water into the hotter asthenosphere, which leads to partial melting of asthenosphere and volcanism. Both dehydration and partial melting occurs along the 1,000 °C (1,830 °F) isotherm, generally at depths of 65 to 130 km (40 to 81 mi).[4][5]

Some lithospheric plates consist of both continental and oceanic lithosphere. In some instances, initial convergence with another plate will destroy oceanic lithosphere, leading to convergence of two continental plates. Neither continental plate will subduct. It is likely that the plate may break along the boundary of continental and oceanic crust. Seismic tomography reveals pieces of lithosphere that have broken off during convergence

3 0
2 years ago
Read 2 more answers
When you think of a volcano, you probably think about how they can be very destructive. They are, after all, natural disasters.
aleksley [76]
B) Forming an island 
(constructive means to build, create, or advance) 
8 0
3 years ago
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Which of the following situations could be represented by this graph?
Vlad [161]

Answer:

The answer is B

Explanation:

As you can see They do walk 1.5 Kilometers and stop at 20 then they walk until 3 kilometers in 40 minutes because they end at 60.

4 0
3 years ago
Is a virus living or nonliving? Why or Why not?
ivann1987 [24]
LIVING because it’s is something within you’re body breaking down until it’s dead.
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3 years ago
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