All energy in any ecosystem starts as a) carbohydrates. b) electricity. c) sunlight. d) water.

The correct answer is option C. sunlight.

Explanation:

The Sun is the main source of energy for organisms, as the light energy or solar energy, the ecosystems.  

Producers are autotrophs such as plants, and algae use the energy from solar light to make organic matter from water and carbon dioxide through the process of photosynthesis.

Hence, this establishes the initiating of energy flow through almost all ecosystems and food web.

Thus, the correct answer is option C. sunlight.

not sure if this is what you'r looking for nnew= nold

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.