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Vikentia [17]
3 years ago
11

Write a description of the ecosystem, including biotic and abiotic factors, in NO MORE THAN FOUR SENTENCES.

Biology
1 answer:
PilotLPTM [1.2K]3 years ago
6 0
An ecosystem consists of all organisms (of different species) in an area and their physical environment. Physical environment (landscape, climate, pH, salinity and other physical features) represent abiotic factors. Biotic factors are living beings in the ecosystem. Those are plants, animals, and other organisms. 
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Some inbred strains of the weedy plant Arabidopsis thaliana flower early in the growing season, but other strains flower at late
RoseWind [281]

Answer:

a. Let us consider that L is responsible for late and l is responsible for early. From the mentioned data, it can be concluded that allele L or late is dominant over early. By crossing plants 1 and 4 we get the expected ratio of 3: 1, which shows that it follows Mendel's law of dominant.  

b. The genotype of all the four plants are:  

1st plant = Ll

2nd plant = ll

3rd plant = LL

4th plant = Ll

c. If the plant 1 is self-fertilized then the expected progeny will be 3 (late): 1 (early).  

In case if the 2nd plant is self-fertilized, the expected progeny will be only early.  

In case if the 3rd plant is self-fertilized, the expected progeny will be only late.  

In case if the 4th plant is self-fertilized, the expected progeny will be 3 (late): 1 (early).  

3 0
3 years ago
Which of the following activities will help make rural societies more sustainable? A. Design energy efficient forms of transport
denpristay [2]

Answer:

The correct answer would be Option C, Multipurpose Trees.

Explanation:

With the advancement in industries and other areas of technology, the rural areas have become so much polluted. So the sustainability of the rural areas is doubtful. The air in the rural areas have become polluted and needs measures to prevent it from harmful consequences of the industrial advancements. Along with industries, the air pollution is also added through vehicles discharge, waste disposal, etc also contribute towards the non sustainability of the rural areas. So to overcome all these problems, the best solution is to grow the multipurpose trees in the rural areas as much as possible to increase the sustainability of these areas. With the plantation of trees, the problem of pollution will be controlled and thus make these areas sustainable.

5 0
3 years ago
Did darwin first believe that each finch he found was a different species? was he right or wrong?.
Ede4ka [16]

Answer:

Wrong

Explanation:

5 0
2 years ago
An allele whose trait is masked (weaker) in the presence of a stronger allele
labwork [276]

Answer:

There are 2 alleles, a recessive allele and a dominant allele. The weaker allele is the recessive allele.

5 0
3 years ago
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What is the difference between the cancerous cells and the normal cells in the image below ???
Gennadij [26K]
One has cancer and the other doesnt
5 0
4 years ago
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