If echinoderms have no lungs, then what do Echinoderms lack? Answer choices: - Lungs - Mass - oxygen - eardrum - gills - ovaries - Organs - Bodies
Lungs

If scraping oneself on a contaminated object may cause death, then scraping oneself on a contaminated object may cause? Answer choices: - mildew - Herpes - deadly - disease - Injury - blood - rabies - death
death

Q: If solid materials used to produce electricity by burning in power stations need to be transported first, then solid materials used to produce electricity by burning in what need to be transported firs? Answer choices: - Conifers - animals - it needs them - humans - heat energy - important habitats - power stations - batteries
A: power stations

Question: If playing is just one of many ways that pugs learn how to behave, then what is just one of many ways that pugs learn how to behave.? Answer choices: - humans - playing - sleeping - growing - Movement - sound - genetics - exercise
Answer: playing

*Question*
If cross-pollination increases biodiversity, then what increases biodiversity? Answer choices: - Reproduction - cross-pollination - By coral exoskeletons - gene flow - Quality of life - self-pollination - asexual reproduction - extinction
**Answer**
cross-pollination

If blood vessels generally carry deoxygenated blood, then what generally carries deoxygenated blood? Answer choices: - blood vessels - animals - layers of fat - mammals - critical organs - an organism's body - elephants - athletes
blood vessels