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d1i1m1o1n [39]
3 years ago
15

Describe the fossils found in the top layers of the Grand Canyon.

Biology
1 answer:
Rashid [163]3 years ago
6 0

Answer:

Sedimentary fossils/rocks

Explanation:

The sedimentary rocks exposed throughout the canyon are rich with marine fossils such as crinoids, brachiopods, and sponges with several layers containing terrestrial fossils such as leaf and dragonfly wing impressions, and footprints of scorpions, centipedes, and reptiles. Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding.

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The location of the Krebs cycle enzymes in eukaryotes is in the mitochondria, while in bacteria the enzymes are found in the ___
kherson [118]

Answer:

cytoplasm

Explanation:

Bacteria as a prokaryotic cell and prokaryotic cells do not have true nucleus or membrane bounded organelles. Therefore all biological activities takes place in the cytoplasm of the cell as well as the enzymes needed for the synthesis of fatty acid are found in the cytoplasm.

5 0
3 years ago
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The outcome of protein synthesis is ______.
Rudik [331]

Answer:

C. A protein

Explanation:

The outcome of protein synthesis is <u>a protein.</u>

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Which of the following is NOT a freshwater ecosystem? a . a river b . a lake c . an estuary d . a stream
JulijaS [17]
They are all freshwater. So the closest would be c. an estuary since it has a free connection with the sea since the sea is not freshwater.
So C.
hope this helps!
8 0
3 years ago
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Apple maggots are a type of fly native to North America. Prior to the introduction of the apple tree to North America, apple mag
scoundrel [369]

Answer:

B

Explanation:

B is the most likely consequence because of the following facts we are told:

  • After apple trees were introduced, some apple maggots began feeding from and laying their eggs on apple trees
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This provides a geographical isolation (because they are feeding and laying eggs on separate trees) and reproductive isolation (because they will only mate on the type of tree on which they are born).

These two factors increase the chances that apple maggots feeding on apple trees will only encounter those who have mated on the same tree, and continue to mate this way. Over time, the populations (i.e. apple tree vs hawthorn tree) will intermix less and less. This will mean the genetic pool will become distinct, and natural selection will be acting differently (different habitats and different genes), encouraging speciation.

7 0
3 years ago
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What is thunder is cause by?
WITCHER [35]
Thunder is caused by the extremely rapid expansion of air around a bolt of lightning due to the very high temperature. It is also caused by the change of pressure around a lightning bolt. 
Hope that helped you.
5 0
3 years ago
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