A.
Variation in species --> natural selection --> differential reproduction --> heredity --> evolution
B.
Heredity --> variation in species --> differential reproduction --> natural selection --> evolution
C.
Variation in species --> differential reproduction --> heredity --> natural selection --> evolution
The correct answer is option A
The major advantage of DDT at that time when it was used as a pesticide is that the DDT was very effective as a pesticide and it killed almost all the pests on which it was sprayed. It killed all the insect and pests that was present in the united states at that time. It later became harmful and entered into the food web.
In A, stronger may not be the good word, but if a species needs to get stronger to survive then it will get stronger through natural selection.
B This in my opinion is true because the species will always adapt to what traits it needs to survive and this ties in with D becuase D is very similar
C causes changes in population in my opinion is the least likely to be true, this is because natural selection only effects offspring and not current population, which is why I would consider this one to be false.
To be honest I'm not sure this is a very tough question and is worded strangely. I would choose C or A, I would suggest getting a second source
Walking does not contribute to global warming.
Answer:
400Joules
Explanation:
the total work done to be calculated is Force× Distance
:f×d=W
80×5=320J
