1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irina [24]
2 years ago
13

7th grade work PLEASE help

Biology
1 answer:
dolphi86 [110]2 years ago
6 0

Answer:

1. Greenhouse gas -  Without greenhouse gases, the Earth would be a frozen planet.

2. Increase of oxygen - The increase of oxygen caused a cooling event.

3. Asteroid impacts  - Asteroid impacts caused climate catastrophes

4. Tectonic plates - Tectonic plates can warm or cool the planet

5. Cloud covering- Cloud cover complicates global warming

Explanation:

Explanations;

1. In the greenhouse effect, gases in the Earth’s atmosphere (such as carbon dioxide, methane and nitrous oxide) trap infra-red radiation from the Earth that would otherwise be radiated to space. Thanks to this natural process, the Earth’s surface has an average temperature of 15°C w1. Without these gases, our planet would be an icy -18°C, and life as we know it would not be possible.

2. Some 2.5 billion years ago, there was no oxygen in the Earth’s atmosphere. Although the Sun was less bright back then, our planet was habitable partly because the atmospheric concentration of methane was 1000 times greater than it is now. All this changed, however, with the Great Oxygenation Event, which was triggered by the presence of blue-green algaew5. These microscopic organisms had evolved to carry out photosynthesis, and they produced oxygen as a waste product.

3. Around 66 million years ago, the 10 km diameter Chicxulub asteroid collided with the Earth, resulting in the demise of the dinosaursw7. The impact threw dust into the stratosphere, which is thought to have blocked out 50% of the sunlight reaching the Earth. This would have compromised photosynthesis and led to the collapse of food chains. It would also have resulted in a dramatic fall in global temperatures, plunging the Earth into an ‘impact winter’ that would persist for a decade.

4. The Himalayan mountain range – formed as a result of the collision between the Indian and Eurasian tectonic plates – is a prime example of how plate tectonics can have an impact on climate. Over the past 50 million years, the slow uplift of the Himalayas has exposed new rock to chemical weathering. In this process, carbon dioxide from the atmosphere binds to certain minerals in the rock, reducing the amount of atmospheric carbon dioxide and cooling the planet.

5. Clouds have important consequences for the Earth’s climate. Low, thick clouds cool the Earth’s surface, while high, thin clouds warm the climate. Key to the formation of clouds are aerosols – tiny particles that are suspended in the atmosphere. They act as tiny ‘seeds’ on which water vapour condensesw10. Aerosols are much more than simply what you find in a hairspray can. They can be natural (such as dust or sea salt) or anthropogenic (such as pollutants or smoke). An increase in anthropogenic aerosols could therefore result in more cloud formation, which (depending on the cloud height) could potentially offset the full extent of global warming.

Just ask for more explanation, hope this helps.

You might be interested in
Daryl learns that millions of years ago, Earth's climate went through a
Mashcka [7]

Answer:

Plants that adapted to the cooler conditions would survive and rapidly evolve into a  new species.

Explanation:

<em>The plants will react by evolving through natural selection.</em>

The plant species that do not have the genes to adapt to the rapid change in climate would become extinct while those with adaptive genes will survive, reproduce, and contribute rapidly to the development of future generations.

In other words, natural selection selects for individuals with adaptive genes and ensures that such individuals reproduce more and give rise to future generations with the adaptive gene while individuals that are poorly adapted to the change in climate gradually fade off the population.

Hence, <u>the plants that adapted to the cooler conditions would survive and rapidly evolve into new species</u>.

8 0
3 years ago
Embryonic stem cells are of particular importance because:
den301095 [7]
I think it's number 3 .......
4 0
3 years ago
Which of the following is not true about density?
ozzi

Answer:

I THINK THE ANSWER IS... A

Explanation:

Density don’t depend on mass and volume because there are different mass and volumes when it becomes density

3 0
3 years ago
Which of the following this true of a rock that has the property of paleomagnetism?
Diano4ka-milaya [45]

A is the correct answer because paleomagnetism is the record of Earth's strength and direction in it's magnetic field. It helps us in the knowledge of evolution.

good luck!!

Brainliest if i was helpful

5 0
3 years ago
answer for biology, if u answer well, i will give you a fake question to answer to give u more points
Shtirlitz [24]

Answer:

A fake question?

Explanation:

7 0
3 years ago
Other questions:
  • 20 pts! And brainliest if i have enought pts AND u answer in 6 min
    6·2 answers
  • Describe volcanic-atmosphere hypothesis
    14·1 answer
  • (classifying organisms) When is the classification "Division" used?
    12·1 answer
  • Which question could be answered using the scientific method? (1 point) Do red or orange flowers attract more butterflies? Do ro
    8·2 answers
  • What are the two body systems that are always controlling the body?
    10·1 answer
  • Describe the role of algae in marine biome
    14·1 answer
  • Organisms that grow in the absence of free oxygen are know as
    10·2 answers
  • Anaerobic step of cellular respiration in which glucose is split
    5·1 answer
  • If the sun grew much stronger in intensity, how would the water cycle be affected?
    8·1 answer
  • First drag pink labels to pink targets to identify the digestive organs. then drag blue labels to blue targets to identify the s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!