The 4 factors affect evolution, according to Darwin’s Origin
of Species are;
Variation
Heritability
Competition
Differential survival
Variation ensures that
there is variability of population traits
on which selection pressures will apply.
Heritability means that the traits must be able to be passed down to offsprings through gametes.
Competition occurs when the individuals in the population compete for limited resources
Differential survival
occurs due to competition for resources
and other selection pressures. This result
to the survival of the strongest and weeding
out of the weak from the population.
D because they help in photosynthesis to make food for plant
The answer is A "the first four steps of meiosis" because in mitosis the first stage is Prophase in which the chromsomes condense and centrioles move to opposite poles. And in Meiosis, the first stage is Prophase I in which the same thing occurs
I believe it's true, sorry if it's not. I just can't find any research to prove if my answer is correct or not.
Answer:
recycling used materials, planting more trees to keep the vegetation at a decent lvl ،putting restrictions on and over factories, etc...
