Mangrove forests have been used to create .
A) firewood
B) foods
C) medicines
D)...
Answers: 2
Biology, 21.06.2019 14:00
The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.
Answers: 1
Biology, 22.06.2019 02:00
The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important
Answers: 3
Biology, 22.06.2019 08:00
What are the student's observations and inferences before he starts his investigation?
Answers: 3