How are the two strands of a dna molecule bonded together to form a double helix?

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

The climate on the leeward side of a mountain differs from that on the windward side mostly in