What happens to the amount of energy as it goes up the food chain?

10 15 20 time (minutes) using the graph of data from this experiment, at which point was the light source most likely removed? ob

Match each trait that an organism displays to a reproductive strategy. the average clutch size of the american green tree frog is 400 eggs. orangutan mothers care for their young for 7 to 8 years. rhinoceroses weigh from 800 kilograms to more than 2,000 kilograms and have few offspring. the oriental fruit fly reaches sexual maturity in 25 to 35 days and has a high rate of predation. great white sharks have a gestation period of 10 to 12 months.

Why might two elements possess similar chemical properties?