Which of the following would be an example of an organism responding to stimuli? A) A bacteria dividing into two.
B) A virus using a host cell to reproduce.
C) An acorn growing into an oak tree.
D) Unicellular pond organisms moving away from toxic chemicals in water.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Which could be a pathway of food through an ecosystem