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Aliun [14]
3 years ago
5

If someone spilled many gallons of oil into a river what type of pollution would that be

Biology
2 answers:
abruzzese [7]3 years ago
7 0

The correct answer is B- Nonpoint source

ArbitrLikvidat [17]3 years ago
5 0
Nonpoint source so your answer would be B.
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What happens before RNA polymerase begins to work
Kipish [7]
Answer:

D. Nucleic acids attach to the bases in the DNA.

Explanation:

Transcription begins when an enzyme called RNA polymerase is added to the DNA template and begins a new chain a new chain to produce complementary RNA. During the RNA synthesis transcription takes place, then the cap and tail is added and then splicing occurs. RNA polymerase moves from the 3 'end to the template strand creating the RNA-DNA double helix or similar the base sequences. This makes a chain with each sugar by the set of bonds called phosphodiaster linkage. Then, the enzyme unwind the DNA and begins the synthesis of RNA. Therefore, D. Nucleic acids attach to the bases in the DNA.
6 0
3 years ago
Which vessel delivers nutrient-rich blood to the liver from the digestive tract?
Brilliant_brown [7]

Answer:

Hepatic portal vein

Explanation:

Hepatic portal vein is a blood vessel that transports blood from the gastrointestinal tract (digestive tract) and spleen to the liver. This blood vessel delivers deoxygenated blood to the liver from the small intestine. This blood transported from the digestive tract to the livers contains toxins and nutrients which have been extracted from food that have been digested.

The hepatic portal vein is about 8 cm in length in average adult and located close to the abdomen at the right upper quadrant.

6 0
3 years ago
The zebra mussel is originally native to the Black and Caspian Seas of Asia. Zebra mussels were first detected in the Hudson Riv
Allushta [10]

Answer:

Lack of predators  

Explanation:

The carrying capacity is the amount of organisms that the habitat is able to support. Invasive species compete with native species for limited resources including food,  niche, etc. This phenomenon may have important negative effects on the survival of native species, even it may lead to the extinction if the invasive species is successful

8 0
3 years ago
If a population has an allele A1 frequency of 0.04 and an allele A2 frequency of 0.96, what is the expected frequency of the A2A
torisob [31]

Answer:

A2A2 = 0.9216

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files.    

Download pdf
6 0
3 years ago
What are the importance of the major organ of the human body?​
hammer [34]

Answer:

Humans have five vital organs that are essential for survival. These are the brain, heart, kidneys, liver and lungs. The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones.

6 0
3 years ago
Read 2 more answers
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