What is not an efficient greenhouse gas : helium methane CO2 or water vapor

According to the laws of physics, should bees be able to fly? The Bee Movie says they shouldn't, but yet they can. Can someone explain?

If William has 5 different shirts and 7 different pairs of pants, how many different combinations could he wear?

Serenity has some pennies and some nickels. She has no less than 18 coins worth at most $0.66 combined. If Serenity has 12 pennies, determine the maximum number of nickels that she could have.

What two numbers add up to 1 and multiply to get - 12

What's the difference between a independent variable and dependent variable

If the mean of the following distribution is 91 and sum of frequencies is 150 find x and y

Find the value of the spring constant for the spring in trial i. use 0.367 s for the value of the period. the mass of the suspended block is 0.400 kg. enter your answer in n/m with three significant figures.

5 + 3x = - 1 + 6 (6x + 1)

If you see a triangle that has a small box in one angle, what type of triangle is it?

There are t teams in a soccer league. each team consists of 11 players. write an equation to find how many players p are in the league