Which of these is the correct sequence of events leading to evolution?

variation in species --> natural selection --> differential reproduction --> heredity --> evolution

heredity --> variation in species --> differential reproduction --> natural selection --> evolution

variation in species --> differential reproduction --> heredity --> natural selection --> evolution

Answer; D

-Variation in species --> differential reproduction --> heredity --> natural selection --> evolution

Explanation;

If there is variation, differential reproduction, and heredity, then there will be evolution by natural selection as an outcome.

Variation of traits or characteristics in organisms leads to differential reproduction since the environment can not support unlimited population growth and thus not all individuals get to reproduce to their potential.

Differential reproduction causes heredity where traits or characteristics are passed on to the off springs. Then the end result is natural selection the more advantageous trait becomes more common in a population, eventually leading to evolution.

Which of these is the correct sequence of events leading to evolution?

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.