Hydrozoa
Is the scientific word for Hydra
oxygen in the air is at a dangerous level
the amount of pollutants in the air is unhealthy
acid rain is likely to fall
Answer:
the amount of pollutants in the air is unhealthy
Explanation:
AQI or Air Quality Index assesses the air quality. It indicates how clean or unhealthy the air is and its effects. It is calculated by measuring the concentration of major air pollutants across many locations in the country. The air quality is divided into six categories:
An AQI of 201 means that the air quality is very unhealthy. Everyone is susceptible to health hazards in this air quality.
Answer:
Answer to 1: a black hole is a tremendous amount of matter crammed into a very small (zero) amount of space. Answer to 2: the top of your head would feel so much more gravitational pull than the tips of your toes that you would be stretched, longer and longer Answer to 3:A black hole is a place in space where gravity pulls so much that even light can not get out.This can happen when a star is dying. The gravity is so strong because matter has been squeezed into a tiny space. because no light can get out, people can't see black holes Answer to 4:stellar, intermediate, supermassive, and miniature. Answer to 5: the asymmetry of bright and dark sections of the ring are caused by the Doppler effect as the matter is coming toward Earth (brighter) or receding (dimmer).
Explanation: