Sex hormones are chemical messengers that control sexual development and reproduction, and androgens are male sex hormones. Given these facts, what are chemical messengers that control sexual development and reproduction among the following options: - Most plants - h2o - animals - insects - androgens - ovaries - hydrogen - acetic acid
androgens

Viruses contain DNA but not much else, and dNA is an abbreviation for deoxyribonucleic acid. Given these facts, what contains deoxyribonucleic acid but not much else. among the following options: - minerals - bacteria - loose soil - pollen - viruses - anemia - PDAs - vertebrates
viruses

Q: Corals form large colonies in shallow tropical water, and shallow tropical waters are remarkable places. Given these facts, where do corals form large colonies among the following options: - remarkable places - competing for resources - the environment - By wind and rain - It gets more light - Absorb light - To keep their body heat. - at or near the margins
A: remarkable places

Question: Running water is better able to dissolve oxygen and nutrients than standing water, and large, warm rivers hold populations but few occur in cold running water. Given these facts, what can better dissolve nutrients and oxygen among the following options: - lakes - SO2 - Raft - a solute - puddles - rivers - currents - lochs
Answer: rivers

*Question*
When an animal moves , chemical energy is converted to mechanical energy, and when chemical bonds are broken by animals the energy is released in the form of work and heat. Given these facts, when a creature moves chemical bonds are converted to what kind of energy among the following options: - waves - mechanical - fossil fuels - electrically - barrel-shaped - Light - bullfrogs - motility
**Answer**
mechanical

*Question*
Contact between rocks over long periods of time causes rocks to smooth, and because of the big wave action, the rocks are very smooth. Given these facts, wave action causes among the following options: - fissures of hot, acidic water - contact between rocks - Animal survival - Electrical energy - scattered light - flow of electrons - electromagnetic energy - energy of moving objects
**Answer**
contact between rocks