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

If plasma cells secrete antigen fighters, then what do plasma cells secrete? Answer choices: - Chemical energy - h2o - oxygen - antigen fighters - harmful substances - bioaerosols - mucus - Organic compounds
antigen fighters

Q: If floods can cause animals to leave an environment, then what can cause an animal to leave an environment? Answer choices: - wind - influenza - drought - Pollution - mines - floods - chemicals - coal
A: floods

Question: If an artery can be relaxed by dilation, then what can be relaxed by dilation? Answer choices: - artery - alveoli - the eyes - the skin - nerves - sweating - epidermal - breathing
Answer: artery

*Question*
If nerves can be used to feel heat and pain on the skin, then heat and pain may be felt on the skin because of what? Answer choices: - sweating - Decibels - forces - nerves - heat - bones - muscles - arteries
**Answer**
nerves

If water vapor cooling causes lenses to fog, then what could cause lenses to fog? Answer choices: - energy of moving objects - Transpiration from plants - Water evaporating - heating liquids - Water vapor cooling - Ice sublimating - scattered light - The atmosphere
Water vapor cooling