In parasitism, one organism harms another organism (the host). An example would be fleas living in cats/dogs; they feed on their blood.
Therefore the answer is A is harmed, and B is helped.
Answer:
New Zealand: 46 people per square mile.
Australia: 7 people per square mile.
Explanation:
Answer:
D.
Explanation:
I think its D. sorry if its wrong
Answer:
Hello There!!
Explanation:
I believe the answer is A. To meet needs through collective effort.
hope this helps,have a great day!!
~Pinky~
Answer:
Estimated size is 1600
Explanation:
Given data:
Size of lake is 250 hectares
Total number of trout who netted is 400
Total number of trout in next week is 200
Total number of trout having fin clip 50
estimation population size is estimated by mark rupture as follow
Estimated population size 
Estimated size
Estimated size is 1600