Pls help What makes it harder to breathe during an asthma attack?
1.blood clots in the trachea
2.excess fluid in the air savs
3.swelling and excess in the airways
4.infection in the lungs

The use of dna as evidence in criminal investigations became possible because of the

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Which statement best compares aerobic and anaerobic respiration