If releasing carbon into the atmosphere has a negative impact on an ecosystem, then releasing what can have a negative impact on an ecosystem? Answer choices: - disease - viruses - A virus - Carbon - tar - toxins - herbicide - vehicles
Carbon

If oxygen is just one substance transported by hemoglobin, then what is just one substance transported by hemoglobin? Answer choices: - gas - glucose - proteins - carbon - oxygen - an anion - hair - Energy
oxygen

Q: If sea tigers are found in the salt water of the ocean, then where is the sea tiger found? Answer choices: - eroded - ocean - warm - fossils - dense - ligt - embryos - dead
A: ocean

Question: If magnetism can cause golf clubs to repel each other, then what can cause golf clubs to repel each other? Answer choices: - electrically - friction - layers of fat - water - fire - repellant - magnetism - heat energy
Answer: magnetism

*Question*
If the infrared spectrum is not absorbed by black objects, then the infrared spectrum is not absorbed by what objects? Answer choices: - eyes - PDAs - black - skin - Cars - humans - mines - matter
**Answer**
black

(Question)
If insects have special excretory structures, then what has a special excretory structure? Answer choices: - Silk plants. - Insects. - a fish - animals - plants - Architecture structures. - barnacles - Corset structure.
(Answer)
Insects.