Answer:
Air pollution occurs when harmful or excessive quantities of
substances are introduced into Earth's atmosphere. Sources of air
pollution include gases (such as ammonia, carbon monoxide, sulfur
dioxide , nitrous oxides , methane and chlorofluorocarbons),
particulates (both organic and inorganic), and biological molecules .
Explanation:
1 out of 5 is 1/5.
Divide that and you get .20, which is 20%, so that is your answer, 20% fat.
Answer:
should be 4
Explanation:
plants cant do photosynthesis without sunlight
The only option given above that is true for natural selection to occur is option d: 'there must be competition for resources'. Natural selection would also occur under predatory pressure. Natural selection occurs through individuals with advantageous characteristics (phenotypes) surviving and passing on their genes (genotypes) to their offspring.
This is false the population density will decrease as the area decreases
