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
Leto [7]
3 years ago
6

Which of the three things provide evidence that South America, Africa, Antarctica, and Australia were once together as one super

continent? Select the three correct answers. Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions. Icy glaciers covered South America, Africa, Antarctica, and Australia as one supercontinent over the North Pole. Mountain chains match up where South America collided with Australia to form Pangaea. Fossils of marsupials were originally the same across South America and Australia. Vast deposits of coal formed in regions with ancient deserts. Cratons match across the edges of continents.
Biology
2 answers:
bazaltina [42]3 years ago
8 0

Answer:

- Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions

- Fossils of marsupials were originally the same across South America and Australia

- Cratons match across the edges of continents

Explanation:

South America, Africa, Antarctica, and Australia were all once part of one super-continent. This super-continent has been named Gondwanaland. As the geological processes got more intensive though and Gondwanaland separated into smaller land masses, continents, which we now know as the continents on the Southern Hemisphere. There are numerous clues that confirm that these continents were once connected. Some of the clues are the matching cratons on the edges of the continents, the glacial deposits and scratches in the bedrock are also matching, lot of fossilized flora and fauna from the same species have been found in several of these continents, the marsupials in South America and Australia  etc.

Alecsey [184]3 years ago
8 0

Answer:

Options (1), (4) and (6)

Explanation:

The continents namely South America, Africa, Antarctica, and Australia were together earlier forming a supercontinent. It has been proved by providing various evidence. Some of the pieces of evidence are as follows-

1) The edges of these continents perfectly fit with one another, suggesting that they were joined together in the past.

2) The presence of marsupial fossils in all these continents also made a significant contribution to this. Marsupials are the high order mammals that once existed in these continents and have undergone evolution and are still present today as kangaroos, wallabies and many more.

3) The glacial deposits that are formed by the scratching of bedrocks are also found in many of these continents and all show similar characteristics suggesting that they were once combined together.

Thus, the correct answers are options (1), (4) and (6).

You might be interested in
Do birds keep theit eggs inside or outside
Sladkaya [172]
Usually they will keep their eggs outside in a nest, good luck:)
6 0
3 years ago
Cell that forms in fertilization<br><br> a. gene<br> b. mitosis<br> c. meiosis<br> d. zygote
Artemon [7]
I think its D I seen this on khan academy
6 0
3 years ago
Read 2 more answers
How can you demonstrate that plant prepare their own food on its leaves ? write with experiment​
Musya8 [376]

Answer:

Answer

take a plant having partially green and white leaves.

Destarch the plant leaves by placing the plant in dark room for three days.

The potted plant then placed in the exposure of sunlight for three days.

pluck the leaf of the plant and allow to boil it in alcohol to remove its green colour.

6 0
3 years ago
1. How has the human population size changed<br> throughout history?
wariber [46]

Answer:

<em>Like every other organism the population size of the humans have increased over time.</em>

Explanation:

With the improvements in science and technology, life becomes better and better for human beings. In the past, when there were no discoveries for curing diseases, the human population declined because of the spread of various diseases and famine conditions.

But as the developments in the scientific world are made, it has been easier to cure diseases and other problems. As a result, the population size of the human goes on increasing.

3 0
3 years ago
HELPPPPPP QUICK please!
denpristay [2]

HI~ I hope this helps

(these answers were hand-written meaning I did not copy and paste so, feel free to use the answers freely)

1.

When ecosystems change rapidly the fundamental environmental cycles such as the circulation of water, carbon and nutrients can change as ecosystems depend on them. The usage of factors such as freshwater, carbon dioxide emissions and fertilizer provides a large benefit to humas therefore meaning, that large and rapid changes to an ecosystem could also effect the things we as humans rely on.

2.  

Complex organic matter is broken down by decomposers into carbon dioxide, water etc. The ecosystem is affected based upon the fact that the decomposition of organic matter that is produced by plants, animals and soil organisms is an important process which affects the different important ecosystem processes like nutrient cycling and carbon sequestration.

3. (could have two answers- I recommend the second)

Adaptation- due to the mutation process which results in changes in the structure and function of organisms, these ecosystems would be different as well as unique. The organisms which possesses the traits needed to adapt could then survive as its unique characteristics due to mutation would provide a strong ability

Rise in temperature- If the temperature located on earth was to rise, organisms would have a higher living rate as bacterial life flourishes in warmer temperatures and dies out in colder ones.

4.

~The rapid change of increased food production provides better life sustainability to those living in the ecosystem.

~The rapid change in a large increasing number of organisms could be helpful as they often live of off one another.

5.

~Rapid growth of things such as phytoplankton which cause dead zones are harmful to the ecosystem. Dead zones create zones where too much oxygen is consumed resulting in areas where plants and sea life can no longer survive.

~Whereas the rapid increase of organisms could also be harmful to an ecosystem as the possibility of the organism outnumbering the food sources could become prominent.

8 0
3 years ago
Other questions:
  • After the DNA zips itself back up into a double helix, what does the mRNA do
    10·1 answer
  • Ribosomes provide the scaffolding on which trnas interact with mrna during translation of an mrna sequence to a chain of amino a
    6·1 answer
  • What is not true of the effects of hypoventilation? what is not true of the effects of hypoventilation? blood ph decreases hydro
    14·1 answer
  • Some argue that wind power should be used more than it is now. What
    13·1 answer
  • Hialeah is a tornado-prone area in Florida.
    14·2 answers
  • Dr. navid has been riding the elevator with his client jill for over an hour in the hopes that this in vivo __________ will diss
    14·1 answer
  • What amino acid does the codon ACU code for?<br> a. ThreonineB. AlanineC. TryptophanD. Leucine
    5·2 answers
  • Two identical flowering plants are planted in neighboring yards. One plant grows tall and healthy, with pink flowers. The other
    15·1 answer
  • Which word describes the process by which a human transmits a disease to an animal?
    6·2 answers
  • Can someone help me with this question
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!