If you need a mass of DNA between 50 and 100 ng in order to have a successful electrophoresis, you should use between and μL of your calf DNA preparation.

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

How does the human body lever work?

Can yall plz me on this question im having a hard time think about it