Kate is arguing with her friend that sardines have higher net production efficiency than blue whales. why do you think that kate is making this statement? a. because sardines are at the top of the food chain, being apex predators, as they feed on blue whales b. because sardines have better ability to assimilate energy and convert it to biomass than the blue whales c. because sardines are warm blooded and blue whales are cold blooded d. because sardines are producers and blue whales are herbivores