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kondor19780726 [428]
3 years ago
5

I need help with this question

Biology
1 answer:
Sauron [17]3 years ago
3 0
Water pollution comes from many sources. One of the biggest sources is runoff. Runoff moves over the surface of the land and picks up chemicals such as fertilizer (contains vital nutrients such as nitrogen, phosphorous, and potassium - NPK) from agricultural fields, lawns, and golf courses. It carries the chemicals to bodies of water. The added nutrients from fertilizer often cause the excessive growth of algae, creating algal blooms which are temporary phenomena because the large population of algae use up the available nutrients (Figure 2.4c). When the algae die, the decomposing bacteria use up oxygen in the water so that other aquatic organisms cannot survive. This has occurred over large areas of the ocean, creating dead zones, where low oxygen levels have killed all ocean life. A very large dead zone exists in the Gulf of Mexico. Measures that can help prevent these problems include cutting down on fertilizer use. Preserving wetlands also helps because wetlands filter runoff.
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How offspring are produced in sexual reproduction
BabaBlast [244]

Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. ... During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.

7 0
3 years ago
Which of the following statements regarding pesticides is FALSE? a. Pesticides are found in food at levels that are below their
Vinvika [58]

Answer:

Option (D).

Explanation:

Pesticides are the chemical used to kill the harmful organism that are categorized as pest. Pesticides can be used ti kill plants, fungi, animal and other microorganism.

Pesticides include herbicides, fungicides and insecticides. Pesticides can be used safely for the non target organisms but under normal use conditions only.

Thus, the correct answer is option (D).              

8 0
3 years ago
I need help on number 1-6 My science homework is due Tomorrow
wariber [46]

3: Geothermal energy

4: An earthquake is the result of a sudden release of stored energy in the Earth's crust that creates seismic waves. ... An earthquake is caused by tectonic plates getting stuck and putting a strain on the ground. ... When the failure at the fault plane results in a violent displacement

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7 0
3 years ago
What kind of bonding occurs between carbon atoms, allowing carbon to form stable molecules?
brilliants [131]

Answer:

The correct answer is single,double and triple covalent bonds .

Explanation:

A carbon atom can form a single bond with another carbon atom example ethane.

A carbon atom can form a double bond with another carbon atom example ethylene

A carbon atom can form a triple bond with another carbon atom example acetylene.

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5 0
3 years ago
What is one difference between dna and rna?
OleMash [197]
D
Cos Dna contains deoxyribose, Rna ribose
8 0
3 years ago
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