Nitrogen bases in dna are held to their complementary pairs by?

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Wich of the following are manual restraint techniques for dogs

Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?