you see katie helped sandra with homework, which helped sandra not fail. Because katie did not let sandra fail, sandra can graudate and get a job. She can also thank katie for not letting sandra fail and go homeless.
sandra helped katie rollerblade. which has no significant impact. Who cares about rollerblading.
your answer is C
Individual, population, community, biome, ecosystem
What r we suppose to be putting on the poster? What age range is this for? Young children or teenagers?
Answer:
atomic number or atomic mass
