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iren [92.7K]
3 years ago
8

Explain natural selection using the finches as an example.

Biology
1 answer:
Lynna [10]3 years ago
7 0
Darwin's finches are a classical example of an adaptive radiation.Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers as well as blood from iguanas, all driven by Darwinian selection.
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A scientist observed a bactirial specimen obtained from mud in a swamp. The bacteria are producing hydrogen sulfide which create
emmainna [20.7K]

<u>Answer:</u>

<em>Reduction of sulfur compounds and the release of hydrogen sulfide is happening here.</em>

<u>Explanation:</u>

Sulfur is an important element in the sulfur cycle. Sulfur compounds can be found on earth in various forms. They can be found in mineral rocks and organic matter. It is the <em>work of bacteria to reduce sulfur</em> compounds and convert them to sulfides.

There are different types of bacteria that reduce various sulfur containing compounds. They are <em>sulfate-reducing bacteria, sulfur-reducing bacteria, sulfite reducing bacteria etc.</em>  In a swamp there is  low oxygen availability and organic matter decays in this condition.

<em>The sulfate reducing bacteria oxidizes the organic matter  and releases Hydrogen sulfide.</em>

4 0
3 years ago
Many new drugs developed by pharmaceutical companies are enzyme inhibitors. Which best summarizes the function of these inhibito
mihalych1998 [28]
Decreasing enzyme binding affinity by blocking the active site. 
4 0
3 years ago
Define biogeochemical cycle.
Leokris [45]

Answer:

Biogeochemical cycle, any of the natural pathways by which essential elements of living matter are circulated. The term biogeochemical is a contraction that refers to the consideration of the biological, geological, and chemical aspects of each cycle.

4 0
4 years ago
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A cell with a diploid number of 24 undergoes MITOSIS, how many chromosomes are in each daughter cell?
GalinKa [24]

Answer:12.

Containing two complete sets of chromosomes, one from each parent.

Explanation:   Once mitosis is complete, the cell has two groups of 46 chromosomes, each enclosed with their own nuclear membrane. The cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.

4 0
3 years ago
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What is the evolutionary evidence that endosymbiosis is real?
fredd [130]

Most important are the many striking similarities between prokaryotes (like bacteria) and mitochondria: Membranes — Mitochondria have their own cell membranes, just like a prokaryotic cell does. DNA — Each mitochondrion has its own circular DNA genome, like a bacteria's genome, but much smaller.

6 0
3 years ago
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