Answer:
The acceleration of the box across the floor is 7.0588 
Explanation:
Given:
Mass of the box = 2550 gram
net force acting on the box = 18 .0 N.
To Find:
The acceleration of the box across the floor = ?
Solution:
Newton's 2nd Law of Motion states that the acceleration of an object as produced by a net force is "directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
"
Newton's Second Law formula is
F = m a
Where:
F = the magnitude of the net force, in N
m = the mass of the object, in Kilogram
a = the acceleration of the object, in 
Now substituting the values, we get
18.0 = a (2.55) [since 2550 gram = 2.55 kg]

a = 7.0588 
Plant cells are specialized for life in a hypotonic environment.
Answer: Option A
<u>Explanation:</u>
A cell which lacks the cell wall, will expand and burst. At the point when set in a hypertonic solution, a cell without a cell wall will lose water to the surrounding, wilt and presumably die.
In a hypertonic arrangement, a cell with a cell divider will lose water as well. The plasma layer pulls from the cell wall as it withers, a procedure called plasmolysis. Thus it can be inferred that plant cell are specialized for life in a hypotonic environment.
Phagocytes, like neutrophils, are typically the first responders & most abundant in the bloodstream during acute (usually short-term) infections. They stimulate the inflammatory response.
Thr other options are more for specific immunity that take longer to work.
An enzyme is a protein produced by an organism that speeds up chemical reactions