If ejaculation occurs when muscle contractions propel male gametes, then what occurs when muscles contract and propel male gametes? Answer choices: - fertilization - sex - ejaculation - electrically - rapid expansion - motion - competition - intercourse
ejaculation

If creating wood-free paper does not require destroying them, then creating wood-free paper does not require doing what? Answer choices: - deforestation - destroying trees - Dehydration - kill them - killing insects - Pollution - competing for resources - to move people
destroying trees

Q: If female gametophytes produce eggs at the tips of plants, then where do female gametophytes produce eggs? Answer choices: - peachleaf willow - The bottom of plants - Earth orbiting the Sun - The middle of plants - the environment - underground - The tips of plants - plant reproduction
A: The tips of plants

Question: If when water molecules begin to occupy a larger space, they begin to solidify, then when water molecules expand, what do they begin to form? Answer choices: - milk - vapor - gas - solid - calcite - matter - rocks - lipids
Answer: solid

*Question*
If cricoid is a tough tissue that contains a protein called collagen, then what does cricoid contain? Answer choices: - Bodily water - cellulum - cellulite - Energy - hydrocarbons - cellulose - cellular - layers of fat
**Answer**
cellulose

Q: If exposure to air pollution can harm the lungs, then which type of pollution is most harmful to lungs? Answer choices: - Lead - air - Cars - oil - acid - CFCs - SO2 - mold
A: air