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Allushta [10]
3 years ago
6

Which of the following is a relatively new disease?

Biology
1 answer:
Anni [7]3 years ago
4 0
The correct answer is D. Bird flu.

Polio and smallpox are very rare today as they were eradicated hundreds of years ago and TB has been around for maybe thousands of years. Bird f!u was discovered in 1957.
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Which of the following describes what might happen if the septum in the heart ruptured? (2 points)
Hoochie [10]

option c is the answer

Explanation:

septum is present between the two ventricles and separates the oxygenated and deoxygenated blood. hence if it gets ruptured then the two blood will mix up. thanks

8 0
3 years ago
Describe the relation between the complexity of an animal
charle [14.2K]

Answer:They all have diffrent body parts and are shapped and built diffrently

Explanation:Cause im smart:)

8 0
3 years ago
HELP ILL GIVE BRAINLIEST
katrin2010 [14]

Answer:option d

Explanation:Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO. 2) from the atmosphere. Seawater is slightly basic (meaning pH > 7), and ocean acidification involves a shift towards pH-neutral conditions rather than a transition to acidic conditions (pH < 7).

4 0
3 years ago
suppose you found a bone of a mastodon which had 6.25%c14and93.75%n14 how long ago did this animal die​
lisabon 2012 [21]

Answer:

t= 3886.18 years old

Explanation:

Whenever an animal dies de C14 and N14 begin to disintegrate in such a way that the proportion between C14 and C12 decreases, with a semi-disintegration period of 5.730 years, T. To get to know how long it takes an element to disintegrate, we must use this semi-disintegration period, which is the time it takes until the amount of the element is reduced to its half.  

We can find the age of the fossil, t, by using the next formula:

t = - (T x ln (C14))/ ln (2)

t = - (5730 x ln (0.625)/0.693

t= - (-2693.12)/0.693

t= 3886.18  

3 0
3 years ago
Why is rna polymerase a good name for this enzyme?
erica [24]
What enzyme? But I do know that the RNA polymerase unhinges/ unwraps the DNA apart creating making an mRNA able to be made from the DNA
7 0
3 years ago
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