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Dimas [21]
3 years ago
5

3) Are greenhouse gases beneficial? Harmful? Explain your answer.

Biology
2 answers:
Anon25 [30]3 years ago
4 0

Answer: Green houses are harmful

they are one of the main cause of global warming.

ankoles [38]3 years ago
3 0

Answer:  Greenhouse gases are harmful to the environment.

Explanation:

greenhouse houses increases global warming and ozone depletion. methane, carbon dioxide, nitrous oxide and other harmful gases from the greenhouses. The combustion of fossil fuels and petroleum releases huge amount carbon dioxide in the environment. The gases trap heat in the atmosphere thus increasing the overall temperature of the earth- global warming. Global warming leads to a series of problems like climate change and ozone depletion.

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List at least 10 ways to maintain health care at home / community.​
arlik [135]

Answer:

Eat a healthy diet

Consume less salt and sugar.

Reduce intake of harmful fats.

Avoid harmful use of alcohol.

Don't smoke.

Be active.

Check your blood pressure regularly.

Get tested

Explanation:

hope it will help you

8 0
2 years ago
What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

7 0
2 years ago
There are many regions of the brain that are involved in memory. It is currently believed that the __________ is important for f
natta225 [31]

Answer:

Explanation:

Hippocampus is important for forming long term memories, while the Prefrontal cortex is responsible for memories retrieval.

4 0
3 years ago
The _____ is the process that describes the formation, breakdown, and reformation of Earth's rock and mineral materials.
salantis [7]
The answer is C(rock cycle)
5 0
3 years ago
What occurs if a t cell binds to an antigen and the t cell does not receive a co-stimulatory signal?
tresset_1 [31]
The correct answer is that "the T cell enters a state of anergy".

The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.
4 0
3 years ago
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