A student collects several plants and pebbles from a riverbank, places them in an aquarium, and records observations for 15 days. The sizes of the plants increase, while the sizes of the pebbles remain the same. The student classifies the pebbles as nonliving things.
Which criteria does the student use as the basis for the classification?
ability to grow
ability to move
O ability to reproduce
O ability to respond to stimuli

(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.

In which of the following relationships is one organism always benefited while the other organism is always harmed

What form of anesthetic was used for field surgery