Which statement is true about biomes? a. biomes don’t contain ecosystems. b. biomes can have only one ecosystem. c. biomes are smaller areas within ecosystems. d. biomes are determined by climate zones.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?