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lys-0071 [83]
3 years ago
11

Describe some of the reasons for exploring the mid-Cayman ridge.

Biology
2 answers:
8090 [49]3 years ago
8 0

Answer:

Life on Earth goes back almost 4.1 billion years, but photosynthesis as characterized by cyanobacteria only appeared around 3.5 billion years ago (Ga). Since life on Earth predates photosynthesis, the exploration of this deep-water environment that lacks any source of light could provide information on what those life forms looked like.

Explanation:

This was the answer on edge

nydimaria [60]3 years ago
5 0

Answer:

Since life on Earth predates photosynthesis, the exploration of this deep-water environment that lacks any source of light could provide information on what those life forms looked like.

Explanation:

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The oldest fossil identifie so far , the stromatolites , represent which type of cell ?
telo118 [61]

Answer:

The correct answer will be option-B

Explanation:

Stromatolites are the sedimentary deposited mounds made of layers of phototrophic microbes which were usually present in the primordial times. The stromatolites are one of the oldest fossils is known today which were formed in the shallow water.

They are composed of the phototrophic bacteria or cyanobacteria which survived and still survive by using the carbon dioxide and sunlight to make food material.

Since the bacteria are the prokaryotic organism therefore, the Option-B is the correct answer.

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4 years ago
Which abiotic factor in tropical forests do boreal forests lacks
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They are cooler and drier than tropical rain forests. Abiotic factors, or nonliving factors, of a temperate rain forest include temperature, water, cloud cover, soil and light. These abiotic factors interact with biotic, or living factors, to form the rain forest's unique ecosystem.

7 0
3 years ago
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The balance or lack of balance between accumulation and wastage is called ________. group of answer choices glacial trough glaci
Roman55 [17]

Glacial balance is the balance or imbalance between accumulation at the top of the glacier and loss or disposal at the bottom.

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As it flows slowly and deforms under its own weight, it takes on features such as cracks and shellac.

As they move, they erode rocks and debris from their roots, forming features such as cirques, moraines, and fjords. Glaciers can flow into bodies of water, but they form only on land, unlike the much thinner sea and lake ice that forms on the surface of bodies of water.

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6 0
2 years ago
Short hair (L) is dominant over long hair (1) in rabbits. Two heterozygous rabbits are mated. Show the punnett square. What phen
Gekata [30.6K]

Answer:

When two heterozygous short haired rabbits are crossed, the short hair being dominant and the long hair recessive, the phenotypes in the offspring will be 75% short hair and 25% long hair, with a short hair:long hair ratio of 3:1.

Explanation:

The crossing of two hybrid individuals for a trait has the probability of producing <u>offspring that exhibit the dominant trait at 75% and the recessive trait at 25%, with the ratio of the dominant trait to the recessive trait being 3:1</u>.

Considering the hair length trait, in rabbits the short hair (L) is the dominant trait and the long hair (L) is recessive, two heterozygous hybrid individuals Ll are crossed:

<em><u>Genotype of the parents</u></em>:

  • ♂ Ll
  • ♀ Ll

Ll X Ll

<u>Punnett Square </u>

Alleles        L      l

L                 LL    Ll

l                  Ll      ll

Where the offspring have a genotype:

<em>Ll 50% </em>

<em>LL 25% </em>

<em>ll 25% </em>

With a ratio Ll:LL:ll of 3:1:1.

Phenotype:

<em>Short hair 75%. </em>

<em>Long hair 25%. </em>

Phenotypic ratio short hair: 3:1 long hair.

In the crossing of two heterozygous short-haired rabbits, taking into account the dominance of the short hair,  phenotypes in the offspring will be 75% short hair and 25% long hair, with a short hair:long hair ratio of 3:1

8 0
3 years ago
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