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vagabundo [1.1K]
3 years ago
14

A theory has been rigorously tested. True False

Biology
2 answers:
Ludmilka [50]3 years ago
5 0
I think The answer is True
Nitella [24]3 years ago
3 0

Answer:

Yes for a theory to become valid it has to pass through serious tests and then be reviewed by other scientists in a scientific journal.

Explanation:

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Two pods of dolphins (same species) exist off the coast of Mexico. Pod A likes to swim and play at depth in cooler water. Pod B
stellarik [79]

Answer:

The correct answer is - speciation is sympatric.

Explanation:

Sympatric speciation is a process of speciation that takes place when there is reproductive isolation between two populations of a species without any geographical separation.

This speciation takes place in the population with come ancestors as given in the question both pods of dolphins lose their ability to interbreed due to the sympatric speciation without any geographical separation.

Thus, the correct answer is - speciation is sympatric.

3 0
3 years ago
Which of the following statements about osmosis is correct?
Pavlova-9 [17]

Answer:

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

Explanation:

Water moves in the cells through osmosis which means water moves from its higher concentration to lower concentration. In many animals and plants, water channels are also present which is called aquaporins which allow the water to move through it in and out of cell more quickly.

The rate of diffusion by channel proteins is higher than simple diffusion therefore the aquaporins speed up the process of osmosis. No ATP is required to transport the water through aquaporin channel proteins.

5 0
3 years ago
how are oil and natural gas collected? A. quarries B. strip mining C. wells are drilled D. an open pit
jonny [76]

Answer:

Explanation:

Natural gas is most commonly extracted by drilling vertically from the Earth's surface. .Hydraulic fracturing, horizontal drilling, and acidizing are processes to expand the amount of gas that a well can access, and thus increase its productivity.

6 0
2 years ago
In humans, hemophilia is caused by an X-linked recessive gene. A woman who is a nonbleeder - that is, she does not display the b
wariber [46]

Answer:

one normal girl

One normal boy

One carrier girl

One colour blind boy

Explanation:

Haemophilia is a sex linked feature as it is transmitted with the chromosomes determining sex.

In humans,the male has XY and the female has XX.the Y chromosome is usually genetically empty.so as mall received his Y chromosomes from his father,he cannot inherit his father's sex linked traits .but women can as they receive and X chromosomes from their fathers.so a cross between a carrier woman Cc and a normal man C result in;

XX--CC

XX--Cc

XY--C

XY--c

7 0
3 years ago
The table shows a few messenger RNA codons.
Nonamiya [84]
Number B is the correct number
5 0
3 years ago
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