Answer: D
Explanation:
lIf the change in the ecosystem occurs, then it would effect the weather, temperature, and the abiotic factors. So, we can see that the bacteria could survive in any sort of temperature. So, A can't be it. Also, B can't be it because the grass can grow in any sort of soil, even if the soil is contaminated. C cant be it because even if the change in the envoriment (temperature, contaimination) kills of one of the brown bear's food source, they can still have other things they can eat. But, if the weather gets too hot or the soil gets contaimnated and kills off the ecalyptus plants, the koala has nothing else to eat. So, best answer is D.
The affinity of unrelated plants
to evolve superficially in similar characteristics under similar environmental
conditions like climates but separated by distance are influence by convergent
evolution. Seed dispersal has evolved independently in most plant
species. For instance, the fleshy part of a tomato is the walls of the outer
layer. This implies convergent evolution under selective pressure where competition
for seed dispersal is through consumption of fleshy fruits by animals such as
birds or ants.
4 is your answerrrrr !!!!!!!
Astronomy. Astronomy coomes from the latin word for star and in ancient times "the stars" refered to anything in outer space.
If the dogs are different breeds, their activity levels could be different because of their breed and not the caffeine. The correct option is A.
<h3>Reliability of experiments</h3>
In order for the outcomes of scientific experiments to be reliable, constant variables should be kept constant.
In the illustrated experiments, the breed and age of the experimental dogs have to be the same. It is one of the variables that have to be kept constant throughout the experiment.
If the dogs are different breeds, their activity levels could be different because of their breed and not the caffeine. The same thing is applicable to different ages.
Thus, evaluating this variable and doing right by it will ensure reliability.
More on the reliability of results can be found here: brainly.com/question/1873979
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