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eduard
1 year ago
11

A typical ecosystem like the one pictured here might have 200,000 caterpillars, 10,000 frogs, 500 snakes, and 35 owls. Why do yo

u think there are fewer and fewer organisms at each level of the food chain?
Biology
1 answer:
dimulka [17.4K]1 year ago
6 0
Because the lower levels of the food chain have the most energy so more organisms can be sustained, but as you go up the food chain, less and less energy is transferred so less organisms can survive
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Some members of david's family have an autosomal recessive disease. david does not have the disease; neither do his parents, nor
Sauron [17]
A pedigree shows the genotypes of the family members 
in autosomal recessive disorders, the diseased genes are inherited from the parents. For the person to get the disease both diseased genes should be there in the genotype as its a recessive disorder.
the dominant gene - H
   recessive gene    - h
for a person to get a disease, genotype should be hh, as its autosomal recessive. If the person is normal he/ she could have the genotype HH or could be Hh and thats called a carrier.
the offspring will receive one gene from the mother and one from the father 

8 0
2 years ago
Coral bleaching can be hazardous to some fish species because
ser-zykov [4K]
Coral Bleaching is hazardous to fish because It leaves fish and corals vulnerable to deseases.And the average temperature of tropical oceans increases by 0.1 degrees C, over the past century.Fish are affected because, most fish in the ocean live in coral reffs, which end up dying, and leaving its habitant fish without a home.
7 0
1 year ago
In the Florida Everglades, Burmese pythons are an invasive species. They were introduced into southern Florida in 1992. These py
Verdich [7]

Answer:

B - Python predation has caused a trophic cascade that changed the mosquitoes' niche.

Explanation:

The passage infers that the predation by the Burmese pythons has reduced the population of the animals in Southern Florida thus making the Culex cedecei mosquito to have a reduced number of options to feed from. This is stressed when the author notes that these mosquitoes are now feeding on cotton rats which harbor the Everglades virus that also have the potentials of being transmitted to humans.

Summarily, the passage is saying that the invasion by the Burmese python has changed the niche of most animals including the mosquitoes in the Southern Florida's wild.

7 0
1 year ago
A student takes granite, a sample of igneous rock, and masses it. She records the initial mass. She then places the rock into a
Tatiana [17]

Answer: the answer is c the independent variable is the presence of the rock tumbler and the student is modeling weathering.

Explanation:

7 0
1 year ago
Any of a group of organic compounds that includes sugars, starches, cellulose, and gums and serves as a major energy source in t
MaRussiya [10]

Answer: 1 : 2 : 1

Explanation:

Carbohydrates were originally referred to as 'hydrates of carbon' because they contained hydrogen, oxygen and carbon.

Sugars, starches, cellulose, and gums all belong to the class of carbohydrates.

They are represented by the general formula Cx(H2O)y, where x and y must be whole numbers.

Thus, Carbohydrates contain carbon, hydrogen and oxygen in the ratio 1 : 2 : 1

5 0
2 years ago
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