7. Which of the following is a true statement about all the living organisms in an ecosystem?
A. All organisms participate in mutually beneficial
relationships with all other organisms in the
ecosystem
B. They are all competing for available resources within
the ecosystem.
C. All living things in an ecosystem share the same food
source.
D. The Sun directly provides all the living things in an
with food for survival

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.