An orange roughy fish is a fourth-level consumer that requires almost ten times the amount of food available from the primary producers in the ecosystem. why isn't more energy available from the primary producers? primary producers are not very efficient and lose most of their energy to the environment. there is too much competition from other fourth-level consumers, leaving very little available to the orange roughy. only a fraction of energy is passed through each level, so there is less available to upper-level consumers. the energy flow is unbalanced and tends to move toward the lower levels.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e. g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from