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Margarita [4]
3 years ago
8

Trawling adversely affects marine life zones because it introduces invasive species into the environment. true false

Biology
2 answers:
Firlakuza [10]3 years ago
8 0

False

It is true that trawling affects the marine life adversely but it does not introduces invasive species into the environment.  

Trawling is a commercial activity which is done across the seabed to catch fish and other seafood. Due to this, the sea bed gets un-stabilized and pollutants that remain trapped in the sea bed are released which negatively affect the local marine life and ecosystems. Some of the problems caused by trawling are as follows -  

a) Sloughing and scraping of sea floor

b) Suspension of pollutants from the sea bed thereby impacting the seafloor fauna

c) destruction of species which are not even targeted

d) Enhanced organic loading on the sea bed  

e) Reduction in diversity and biomass

USPshnik [31]3 years ago
6 0
The correct answer, I believe is false. 
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Delvig [45]

Answer:

Pugs appear to be ugly due to them being bred deformed by design, harboring a condition called brachycephaly.

Explanation:

4 0
2 years ago
What are histones, and how are they arranged in nucleosomes? Drag the terms on the left to the appropriate blanks on the right t
Eva8 [605]

Answer:

1) c. five

2) a. lysine and arginine

3) g. two

4) d. four

Explanation:

A nucleotide can be defined as an organic molecule which forms the building block of nucleic acid such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Basically, nucleotide comprises of the following parts;

1. Nitrogenous base: this includes adenine (A), thymine (T), guanine (G), and cytosine (C) which are mainly found in the DNA while adenine (A), guanine (G), uracil (U) and cytosine (C) are found in the RNA.

2. A phosphate group.

3. A penrose sugar: it is either deoxyribose in DNA or ribose in RNA.

The two parts or chemical components of a nucleotide which do not change throughout the structure of DNA are;

I. Five-Carbon Sugar also known as deoxyribose and it has hydrogen on its second carbon.

II. Phosphate: this is the structural backbone that provides support to DNA.

Histones are a group of highly basic proteins that are mainly associated with deoxyribonucleic acid (DNA) in the nucleus of a living organism and then condense it to chromatin.

Histones include five main classes of relatively small basic proteins containing relatively large amounts of lysine and arginine. Nucleosomes are made of two each of four types of histones.

4 0
3 years ago
Oxytocin is responsible for causing contractions of uterine smooth muscle during labor. preventing the formation of goiters. pre
zepelin [54]

Answer:

the correct option is:

a. causing contractions of the uterine smooth muscle during childbirth.

Explanation:

The question is: what is oxytocin responsible for?

a. causing contractions of the uterine smooth muscle during childbirth.

Oxytocin is responsible, being this the correct answer.

b. prevents the formation of goiters.

Thyroid hormone regulates this process.

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Hormones epinephrine and norepinephrine.

d. milk production by the mammary glands.

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