If ants communicate by leaving chemical trails for other ants to follow, then how do ants communicate to other ants to encourage them to follow? Answer choices: - Skywriting - Electrical energy - Using a phone to communicate - Leaving a written communicatio - Something coming from a gland - By wind and rain - Chemical energy - Leaving chemical trails
Leaving chemical trails

If converting a liquid to a gas happens when liquids are heated above a point, then when liquids are heated above a point, a liquid is converted to what? Answer choices: - hot - acid - gas - water - food - oil - heat - bubbles
gas

Q: If overcoming the energy barrier starts a chemical reaction, then overcoming the energy barrier starts a what? Answer choices: - chemical reaction - contraction - Movement of an air mass - expansion - metabolic reaction - energy storage - increased body strength - oxidation reaction
A: chemical reaction

Question: If parasites can cause illness, then what causes illness? Answer choices: - health - parasites - chickenpox - toxins - viruses - exercise - wellness - Roundworms.
Answer: parasites

*Question*
If echidnas lay eggs, then what do echidna lay? Answer choices: - food - fat - seeds - eggs - edible - tadpoles - nektar - sacs
**Answer**
eggs

Q: If it is essential to observe the average weather in one place over time, then to learn more about the average weather, it is essential to:? Answer choices: - staying warm - observe it - argue about it - ignore it - survive - temperature - A computer - write about it
A: observe it