It has been estimated that active tobacco smoking causes close to 90% of lung cancer cases and is the cause of 87% of lung cancer deaths.
Answer:
Naturally: only during daylight hours
Artificially: all 24 hours (under perfect circumstances)
Explanation:
Photosynthesis can only occur when a plant receives energy from a light source. Naturally, the light source would be the sun which is only around for a certain amount of hours. If the plant is under an artificial light source, like a lamp, then photosynthesis can occur at all hours of the day.
Answer:
histamine
Explanation:
the inflammatory response (inflammation) occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause. The damaged cells release chemicals including histamine, bradykinin, and prostaglandins. These chemicals cause blood vessels to leak fluid into the tissues, causing swelling
Answer:
1. c. Island arc chain.
2. d. Indian and Eurasian
3. a. divergent
4. c. mid ocean ridge
Explanation:
The convergence of oceanic and oceanic crust can leads in the formation of volcanoes that may rise above sea level forming Island. The formation of Mount Everest occurs from the fusion of tectonic between the Indian and Eurasian tectonic plates about more than ten millions of years ago. Seafloor spreading occurs at divergent plate boundaries in which less-dense material rises from the earth crust forming a mountain or elevated area of the seafloor. The geologic feature formed at divergent boundary is mid ocean ridge.
A food web for there is many complications and mechanisms within it. It is too compa food web being that is is complicated and intertwined. Too complex to be a food chain. Not an ecosystem or a community either.