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3 years ago

What changes in agriculture have increased the potential for water pollution

Biology

1 answer:

Vinvika [58]3 years ago

7 0

small chicken farms turned into factories because it was cheaper to

maintain and it also made it cheaper for people to buy eggs. However

this produced a huge problem of what to do with the chicken manure

and this is also a problem amongst other types of livestock as well as well as factories having big oil spills hope this helps sorry didnt know what you wanted for a answer

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How does photosynthesis yield sugar? sumarize how the light-capturing reactions a?

julsineya [31]

Answer
Photosynthesis yield sugar in two main steps

1. Light reaction
In this step plant absorb sunlight which cause photolysis of water and excitation of electron. this electron flow through Z-scheme and atlast enter into NADH, the end product of light reaction is ATP and NADH₂.

2. DArk reaction.
In this step ATP and NADH₂ are used as raw materials. it occurs in stroma of chloroplast. here CO₂ is used through Calvin cycle and at the end glucose is prepared.

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3 years ago

Why bacteria cannot grow on pickle and jam kept in refrigerator but fungi can

madreJ [45]

Most macteria canot grow well in acid fluids like pickle juice. so its the combination of salt and acid. as for fungi, i can only guess..... many bacteria dont grow well if the temperature is coldish or if the conditiones are very salty or sugary

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3 years ago

In a certain group of African people, 4% are born with sickle-cell disease, an autosomal recessive disorder. Heterozygous indivi

love history [14]

Answer:

the correct answer is C) 32%

Explanation:

Sickle-cell anaemia is an autosomal recessive genetic disorder. Individuals with the homozygous recessive have sickle-shaped blood cells. Whereas, individuals with heterozygous are only carrier of sickle cell trait. The carrier individuals are resistant to malarial parasite and do not have malaria.

As per the question, 4% of an African population is born with sickle-cell disease, then the percentage of the population is heterozygous and resistant to malaria will be:

Hardy-Weinberg formula is equilibrium,

p² + 2pq + q² = 1

p = frequency of the dominant allele in the population

q = frequency of the recessive allele in the population

p2 = percentage of homozygous dominant individuals

q2 = percentage of homozygous recessive individuals

2pq = percentage of heterozygous individuals

Given, homozygous recessive for this gene (q2) is 4% which is 0.04, the square root (q) is 0.2 (20%) then p should be 1-0.2 = 0.8 (20%).

Thus, the frequency of heterozygous individuals = 2pq.

2 (0.8 x 0.2) = 0.32 (32%).

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3 years ago

Farah is doing an experiment that involves calculating the speed of a longitudinal wave. What will most likely happen if she inc

vovangra [49]

The speed of a longitudinal wave will not be affected by the temperature of its surrounding. Base on the formula for the wave speed (applicable on longitudinal wave), wave speed ( speed in m.s 2) is equal to the distance of a wave (wavelenth in meter) travel over a unit of time (seconds) or wave speed is equal to distance of a wave times the frequency (hertz), temperature is not included in calculating the wave speed.

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3 years ago

Read 2 more answers

Which step in the process should you do when you write a conclusion?

nexus9112 [7]

I think the answer is c

6 0

3 years ago