Population density =number of individual divided land area
land area should be in square kilometers
therefore 120 ha =120 x0.01=1.2 square kilometer since 1 ha=0.01 kilometer square
total population= (80 x 1500)/100=1200
population density is therefore=1200/1.2=1000
Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
hope this helps
Answer:
science is the study of the structure and behavior of our world and universe.
Things science cannot explain
Why ice is slippery
How many species of animals and living things there are
Explanation:
The rest are incorrect:Bath salts can produce anxiety, agitation, hallucinations, and paranoia even in low doses, not just when used at high doses.Bath salts cannot cause a rapid drop in blood pressure and heart rate, instead it causes rapid increase when ingested, snorted, or injected.Bath salts are not synthetic drugs like mdma (methylenedioxy-methamphetamine).
