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sergejj [24]
3 years ago
13

Which of the following would most likely cause

Biology
1 answer:
igomit [66]3 years ago
6 0

Answer: Option B) . a decrease in the amount of oxygen dissolved in

the pond

Explanation:

Anaerobic bacteria are able to survive in the absence of oxygen while aerobic bacteria survive only in the presence of abundant oxygen.

Hence, while reduced levels of dissolved oxygen in the pond decrease the amount of aerobic bacteria like Bacillus; anaerobic bacteria like Actinomyces flourish since they survive on organic substances like methane, cellulose instead.

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Flower color in the varieties of pea plants studied by Mendel is controlled by alleles at a single locus. A group of peas homozy
VladimirAG [237]

Answer:

Option 1, 0

Explanation:

Complete question

Flower color in the varieties of pea plants studied by Mendel is controlled by alleles at a single locus. A group of peas homozygous for purple flowers is grown in a garden. All flowers are purple, yet there is some variation in the intensity of the purple color. The estimated heritability for this observed variation in flower color would be

  1. 0.
  2. 0.5.
  3. 0.75.
  4. 1.
  5. Cannot be determined without additional information

Solution

Given all the pea plants in the garden are homozygous purple (PP)

If we cross two PP parents, the following offspring will be produces

PP * PP

PP, PP, PP, PP

This means that all offspring are also homozygous purple.

Thus, chances of inheriting variation in the purple color of offspring are negligible. However, the variation in their color can be due to their individual interaction with the variable factors in the environment

Hence, option 1, 0 is correct

6 0
3 years ago
Rusting is a chemical reaction between iron and oxygen. Over time, the mass of a rusting nail
marshall27 [118]

Answer: Yes this chemical reaction obeys the laws of physics. Its very simple, let me explain.

Explanation:

When Iron(Fe) oxidizes it gains three oxygen atoms so it reacts to form Fe2O3 so it becomes bigger or explands. Its also sometimes called "oxide jacking".

4 0
3 years ago
Can someone help me to write conclusion about nervous system in human
Svetradugi [14.3K]
Conclusion this is how the nervous system in human 
3 0
3 years ago
Read 2 more answers
What's the answer please help me
Alexus [3.1K]
I believe the answer is b.
5 0
2 years ago
How do a chromosome, a gene, and an allele differ? How are they similar?
umka2103 [35]

Answer: A gene is a sequence of nucleotides in DNA or RNA that encodes the synthesis of a gene product, either RNA or protein. A chromosome is a long DNA molecule with part or all of the genetic material of an organism. A allele is one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

Explanation:

8 0
3 years ago
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