Answer:
This is an example of biotechnology because it seeks to solve a societal problem using biological entities.
Answer:
B
Explanation:
Increasing greenhouse gases would lead to an increase in the average global temperature throughout this century.
Answer:
-300 N
Explanation:
The key words here are "constant speed". By this, we mean that all the forces on the object (the sailing boat here) are balanced - so they must be equal in magnitude.
Here, we know that the boat has a forward force of 300 N. Because the forces are balanced, then the backward force must also have a force with magnitude 300 N.
However, note that because the backward force is in the opposite direction as the forward force, we must put a negative sign on the 300. So our answer is: -300 N.
