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Ivan
3 years ago
14

Humans are responsible for some of the negative changes that occur in nature because they

Biology
1 answer:
densk [106]3 years ago
3 0

Answer:

Create pollution by released carbon dioxide and other harmful gases

Explanation:

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Why do we need cells
Anuta_ua [19.1K]
We need cells for every day function. This includes significant processes like growth and development or protection from disease 
4 0
3 years ago
Read 2 more answers
A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
3 years ago
Please help me and you will get 64pt and the braillest
Nataliya [291]
Ok then what do you need there is no photo if you whant mesige me and I will help you
8 0
3 years ago
A researcher examining a root tip observes a plant cell with condensed sister chromatids, kinetochores with attached microtubule
Basile [38]

Answer:

The statement 2 best describes the next process taking place within the cell.

Explanation:

A kind of cell division, which is characterized by the differentiation of a single parent cell into two daughter cells that comprise equivalent chromosomes number is termed as mitosis or reductional division. In the given case, the arrangement of chromosomes at the equatorial plate indicates that the cell is currently in the metaphase stage of mitosis.  

After going through the stage of metaphase, the cell moves into the anaphase stage. In the anaphase stage, the sister chromatids begin to segregate and move towards the opposite pole of the cell. Thus, statement 2 correctly illustrates the next stage of the cell.  

3 0
3 years ago
The allele for blue feathers is dominant. The allele for brown feather is recessive. If one bird that is homozygous dominant is
balu736 [363]

Answer:

The following punnet square would be constructed from the above mentioned cross:

        b             b

B     Bb           Bb

B     Bb           Bb

A punnet square can be described as a diagram which is made to illustrate the outcomes of a cross.

The results from the above punnet square show that the offsprings produced from a cross between homozygous blue and brown parent, will all have blue feathers but they all will be heterozygous for the trait.

6 0
3 years ago
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