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stiks02 [169]
3 years ago
6

Many scientist believe that dinosaurs became extinct due to

Biology
2 answers:
valina [46]3 years ago
8 0
Many scientists believe dinosaurs became extinct due to:


It’s widely acknowledged that the Earth was a cold, dark place after a giant meteor, measuring roughly six miles across, struck Mexico about 66 million years ago, which many believe triggered what is known as the end-Cretaceous mass extinction.
goldfiish [28.3K]3 years ago
7 0

Answer:

The correct answer would be mass extinction due to meteor collision.

Explanation:

There are many different theories about the extinction of the dinosaurs. But many suggest extinction occurs due to meteor or asteroid collision. They believe that 65 million years ago an asteroid or meteor collided with earth and a huge amount of dust and debris covered global climate and environment. Due to this sunlight was not able to come to earth that is important for all the cycles and also primary source of energy for any ecosystem which ultimately lead to famous mass extinction.

Thus, the correct answer would be mass extinction due to meteor collision.

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How are the three stages of photosynthesis linked?
pantera1 [17]

STEP ONE: Harvesting Radiant Energy

The first step of photosynthesis occurs in the chloroplasts of plant cells. Light photons are absorbed by a pigment called chlorophyll, which is abundant in the thylakoid membrane of each chloroplast. Chlorophyll appears green to the eye because it does not absorb green waves on the light spectrum. It reflects them instead, so that’s the color you see.

STAGE 2: Converting Radiant Energy

After radiant energy from sunlight is absorbed, the plant converts light energy into a usable form of chemical energy to fuel the plant’s cells

STAGE 3: Storing Radiant Energy

The last stage of the photosynthesis process is known as the Calvin-Benson cycle, in which the plant uses atmospheric carbon dioxide and water from soil to convert ATP and NADPH. The chemical reactions that make up the Calvin-Benson cycle occur in the stroma of the chloroplast.

3 0
2 years ago
The biconcave cells in blood that lack nuclei when they are mature are the __________
34kurt

The biconcave cells in blood that lack nuclei when they are mature are the red blood corpuscles.

<u>Explanation:</u>

The blood contains a combination of cells especially the Red blood corpuscles, white blood corpuscles and the blood platelets. The major function of the Red blood corpuscles is to carry oxygen and supply to all the parts of the body from the lungs and similarly carry carbon dioxide and supply to all parts of the body . To facilitate this it does not have a nuclei.

4 0
3 years ago
What happen to the balloon when the air decreasing
Degger [83]
As the air inside a balloon decreases, its volume (amount of space occupied by the object) decreases, meaning the balloon gets smaller.
4 0
3 years ago
What happens during photosynthesis?
lesya692 [45]

During photosynthesis, chlorophyll absorb light energy that is used to convert carbon dioxide from the air and water from the soil into glucose. Oxygen is released as a by-product. Some glucose is used for respiration, while some is converted into insoluble starch.

6 0
3 years ago
Read 2 more answers
In 2014 the birthrate in France was 12 (per 1000 people) in the same year the death rate in France was 8 (per 1000 people) what
Troyanec [42]

Answer: The correct answer is option (B).

Explanation:

Birth rate in Hungary in 2014 = 12 (per 1000 people)

Death rate in Hungary in 2014= 8 (per 1000 people)

Growth rate = Birth rate - Death rate :

12(per 1000 people) - 4 (per 1000 people)= +4(per 1000 people)

Positive sign indicates that there will be a increase in growth rate by the magnitude of 4 per 1000 people in 2014.

Hence, the correct answer is option (B).

8 0
3 years ago
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