Answer:
Afforestation is the planting or adding of trees in an area where there was never a forest or plantation. This is a method to create a new forest. Reforestation is the replanting of trees in an area where there was once a forest which was destroyed or damaged.
Explanation:
Answer:
C. Infrared and radio waves can pass through very dense materials without interference.
Explanation:
It was my study island question.
Answer:
Energy = Power × Time
We make Time the subject in this equation
Time = Energy ÷ Power
Time = 10000 ÷ 400
Time = 25seconds
Answer:
option D
Explanation:
given,
wavelength = 600 nm
width of separation = 0.02 mm
L = 5 m
for mth order maxima

for (m+1)th order maxima

now,
and

hence,





hence, the correct answer is option D