You are presented with the question "What cannot reproduce by itself?" and the following answer choices: - Acids - all plants - anemia - smallpox - cigarettes - all corals - all bacteria - acetic acid Now knowing that viruses cannot reproduce by themselves and some smallpox viruses are maintained in laboratories, choose the best answer.
smallpox
You are presented with the question "what does biodiversity increase the productivity and stability of?" and the following answer choices: - density - the looseness of soil - water vapor - the environment - h2o - swamp vegetation - biological diversity - organisms and their habitat Now knowing that biodiversity increases the productivity and stability of ecosystems and an ecosystem includes the organisms and their habitat, choose the best answer.
organisms and their habitat
Q: You are presented with the question "What causes objects to attract?" and the following answer choices: - heat energy - mussels - insects - animals - magnetism - electrically - hormones - power Now knowing that magnetism can cause objects to repel each other and magnets attract and repel, choose the best answer.
A: magnetism
Question: You are presented with the question "An animal will have better chances at life if it has better what?" and the following answer choices: - growth - hormones - proteins - salinity - traits - toughness - senses - motility Now knowing that better senses have a positive impact on an animal 's survival and life is reduced to survival , choose the best answer.
Answer: senses
*Question*
You are presented with the question "what can be painful and dangerous?" and the following answer choices: - Brutal temperatures - smoking cigarettes - Pesticides - ultraviolet light - weathering - hyperthyroidism - nutrients - oxygen Now knowing that ultraviolet light causes sunburn and sunburns are painful and can be dangerous, choose the best answer.
**Answer**
ultraviolet light
Q: You are presented with the question "what requires great amounts of water to survive?" and the following answer choices: - bears - cactii - fish - squids - h2o - Whales - Birds - atmosphere Now knowing that an aquatic animal requires great amounts of water to survive and fish are backboned aquatic animals, choose the best answer.
A: fish