Answer: The answer is A. Comparative
Explanation: The photo shows two different types of soil with the same type of worm. Therefore this it a comparative experiment. Trust me I got this question correct.
Ecosystems need producers because they are the start of the food chain.
Producers are consumed by first consumers, the second consumers and so on.
There are no statements given however a centriole is made up of microtubules triplets in a 9+0 pattern (I am unsure of what level of depth is required)
<span>Non-renewable energy sources to run cultivates through water system, transportation, arrangement, gather, preparation pesticides
Energy subsidy is the measure of vitality and energy that is important to make the nourishment that we eat so on the off chance that we eat something that has 2 calorie however requires 6 calories to influence we to have the appropriate energy of 6</span>