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gulaghasi [49]
3 years ago
7

Why do scientists believe the polar ice is disappearing?

Biology
1 answer:
Allisa [31]3 years ago
8 0
Polar ice is disappearing because of global warming
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Which is a major mineral that makes up sand?
yulyashka [42]

Answer:

quartz

Explanation:

wind and rain break down these minerals into small grains, like sand

6 0
3 years ago
Read 2 more answers
a gymnast has a weight of 600 in each hand is 150cm calculate the pressure of the floor doing a handstand
Sholpan [36]

Answer:

20

Explanation:

pressure =force/area

150cm ×2=300cm^2

600÷300=20

I think this is right, you need to put the units on your answer

4 0
3 years ago
"Mutations in the lacI and lacO genes in the lactose system often lead to full production of the three structural genes related
ahrayia [7]

Answer:

constitutive mutations

Explanation:

Constitutive mutations -

They are the strains which uninterruptedly make proteins , and therefore , can lead to excess of protiens and the process is very difficult or nearly impossible to stop , is known as the process of Constitutive mutations .

One of the example of this process of Constitutive mutations is ,

The strain with lac operon mutation which can even results in th etranscription of the lac genes .

Hence , from the statement of the question ,the correct term is Constitutive mutations .  

6 0
3 years ago
Dolphins are highly social animals, often living in pods of up to a dozen individuals. What kinds of behaviors have been studied
yanalaym [24]
<span>It is through whistles that dolphins interact with the pod. Each dolphin has a distinct whistle that identifies it with other dolphins of its pod. If an individual is in danger, it uses a particular noise that indicates aid is needed, so the pod responds quickly.
</span><span>
Small dolphin species gather into multi-member pods as a way to compensate for their size when facing predators.</span>
4 0
3 years ago
What is the tolerable upper intake level for zinc for adults?
sdas [7]

The tolerable upper intake of zinc for an adult is 40 mg per day.

But the recommended daily intake of Zinc (RDA) is 15 mg per day for an adult. Nevertheless, this contribution must be adapted according to your age and your activity. Attention, in case of excessive excess, zinc can become toxic.

The tolerable dose (without side effects) can be up to 40 mg per day, it is prescribed in case of infection as during cooling. Attention in case of treatment with 40 mg of zinc per day, the maximum duration of treatment is 4 days.

6 0
3 years ago
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