If we wanted to feed the most people that we could, what kinds of food (or diet) would people need to eat to have the most energy available to the people. Suggest appropriate food chains for a human population that will double in the next 40 years. Explain your reasoning in reference to the energy transfer efficiency in a food chain and the 10% rule.

Which type of respiration takes place when there is no oxygen present

Using meiosis, the sporophyte produces spores that are .

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.