Light demonstrates the characteristics of

a. particles only
b. waves only
c. both particles and waves
d. neither particles nor waves

C. both particles and waves

Explanation:

As we know that by the Huygen's theory light is of wave nature and this can be verified by the experiments

the wave nature of light is given by following phenomena

1) Reflection of light

2) Refraction of light

3) Polarization

4) Interference

5) Diffraction

So in above all examples light nature verify as wave nature.

Now by Einstein's theory  he explained about the particle nature of light by his theory of photo electric effect

So here by both combined theory and De-Broglie theory of light we can say

Light is of particle nature and wave nature both

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide