to make
create
to take in
absorb
sunlight
ray
energy (noun)
electricity
to give energy (verb)
power
flat surface
smooth
hard to stand or walk
slippery
person who rides a bicycle
cyclist
to mix or add
combine
to make people be interested
attract
to be real
exist
to find for the first time
discover
outside of Earth
outer space
very, very small
microscopic
top part of the ground
surface
1,000,000,000
billion
