Which of the following is saturated hydrocarbon?
1 alkyne
2 alkane
3 ethylene
4 alkene​

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !