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puteri [66]
3 years ago
5

When energy is transferred within a closed system...

Biology
1 answer:
Doss [256]3 years ago
3 0

Answer:

B. no energy is lost or gained.

Explanation:

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Researchers have found that mitochondria and chloroplasts in eukaryotic cells have their own DNA. This DNA is different from the
ikadub [295]

Answer:

B. Early Eukaryotic cells engulfed mitochondria and chloroplasts

Explanation:

Mitochondria and Chloroplast are organelle that are found in cells of higher animals. Chloroplast are found almost exclusively in plants and mitochondria is found in animal cells. The function of these organelles are to produce energy to the cells, and by extension, the organism that they live in.  

Unique features of these organelles show that they have their own DNA and divide and multiply on their own. This strongly suggest that they were once free living prokaryotes and were engulfed by larger cells and a symbiotic relationship began.

As time progressed, these prokaryotes did not require all of their genetic information and this was removed from their system. They kept essential genes and regulatory bodies separate that they needed for their maintenance and function that they provide.  

8 0
3 years ago
Why do small islands that are distant from a mainland tend to have fewer plant species than large islands that are close to a ma
krek1111 [17]

Answer:

Hey there

Your answer should be:

Distant islands are harder to get to and require specialized seed dispersal strategies.

It makes the most sense.

3 0
3 years ago
The sun is the ______ source of energy for hetertrophs
yan [13]

Answer:

main (let me know if I am wrong but that seems right) can I get brainliest please? (rate 5 stars please)

Explanation:

7 0
3 years ago
What is the practice of leaving old stalks to provide cover from the rain called?
Travka [436]

Answer:

No-till farming, which is the practice of leaving old stalks, provides cover from rain. The cover reduces water runoff and slows soil erosion. Contour plowing helps prevent erosion from heavy rains.

Explanation:

which is the practice of leaving old stalks, provides cover from rain. The cover reduces water runoff and slows soil erosion. Contour plowing helps prevent erosion from heavy rains.

4 0
3 years ago
In a bog or swamp, which trophic level usually has the highest biomass? A: tertiary consumer B:primary consumer C:producer D:sca
Andru [333]

Answer:

c. producer

Explanation:

6 0
3 years ago
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