a) relating to trade, industry, or money

i) a situation in which a difficult choice has to be made between two different things you could do

an extremely large, round mass of rock and metal, such as Earth, or of gas, such as Jupiter, that moves in a circular path around the sun or another star

b) a real or imaginary straight line going through the center of a object that is spinning, or a line that divides a symmetrical shape into two equal halves

the lightest gas, has no color, taste, or smell, and combines with oxygen to form water

a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity

e) to cause a liquid to change to a gas, especially by heating

the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.

relating to the whole world; worldwide.

without limits; extremely large or great

d) to make someone more likely to do something, or to make something more likely to happen

of or at a fairly low temperature.

to fall or shrink together abruptly and completely