In an ecosystem, energy? A) Cycles along with chemical nutrients B) comes ultimately from bacteria C) typically flows from consumers to producers to decomposers D) typically flows from producers through a series of consumers

1.) Describe a food chain that has at least four different trophic levels. Label the tropic level (Producer, Primary consumer, Secondary Consumer, or Tertiary Consumer), whether the organism is a(n) autotroph or heterotroph, and provide an example of an organism at each tropic level.   2.)Name two biological processes involved in rapid carbon exchange:   3.)Name two geologic processes involved in long-term carbon exchange:

In which food chain microorganisms breakdown food formed by primary producers?

Which of the following is an example of a secondary consumer? a)A spider that eats herbivorous insects b)A plant that uptakes nutrients from the soil c)A cow that eats grass d)A shark that eats a tuna that eats other fish

Which of the following statements is correct? A) Microorganisms are significant contributors to the total biomass on Earth. B) Microorganisms represent a much smaller amount of Earth's biomass than plants. C) Microorganisms represent a much smaller amount of Earth's biomass than animals. D) Microorganisms are significant in number, but not in overall biomass.

*Do not use the picture I sent yet*____Secondary production occurs after primary production, after all of the products needed for respiration are used by an organism • True • False --------- A detritus is an important organism in the environment because it will break down organic matter that can be recycled and reused by other organisms. • True • False -------- use the diagram (picture) I posted and answer this question by choosing an option below:  The rate of mass loss, is _____ related to ______. * positively, the lignin to nitrogen ratio * negatively, the nitrogen content * positively, the lignin content * negatively, the lignin to nitrogen ratio

A food chain consists of grass, sheep, and human populations. If 7000 kJ in harvested grain is fed to the sheep, how much energy is available for the human population? A) 70 kJ B) 7.0 kJ C) 63 kJ D) 0.70 kJ E) 700 kJ

(a) Define biofuel. (b) Describe three sources of biomass.

Question 9 In a nutrient spiral, __________________.     A)  nutrients are transported to deeper waters.   B)  nutrients are transported downstream.   C)  salmon move nutrients to terrestrial systems.   D)  nutrient cycles occur in discrete segments of the stream.     Question 10  _________ obtain energy from inorganic molecules; _______ obtain energy from organic molecules.     Autotrophs; heterotrophs   Heterotrophs; autotrophs   Secondary consumers; primary producers   Carnivores; photosynthesizers

21