Agene for disease resistance in fir trees is transferred to pine trees using modern dna technology. how might this be economically to tree farmers?

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.

Ascientific idea becomes valid when it is what?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous