Q: What type of chemicals do ants communicate with? Choices: - Alkanes - pesticides - hormones - pheromones A:
pheromones

(Question)
Q: Although lots of symbiotic relationships help both organisms, sometimes one of the organisms is harmed. when that happens, the organism that benefits, and is not harmed, is called a what? Choices: - child - viruses - infection - parasite A:
(Answer)
parasite

Ques: Q: Which cycle is named after the scientist melvin calvin? Choices: - krebs cycle - melvin cycle - melcal cycle - calvin cycle A:
Ans: calvin cycle

(Q).
Q: What carbohydrate from fruit juices is a gel-forming substance important in jelly making? Choices: - potassium - gelatin - cellulose - pectin A:
(A).
pectin

Ques:Q: Which period after birth has the most rapid growth? Choices: - adolescence - middle childhood - early childhood - infancy A:

Ans:infancy

Question: Q: What type of species have a large effect on the balance of organisms in an ecosystem? Choices: - decomposers - producers - secondary consumers - keystone A:
Answer:
keystone