NEED HELP ASAP Mutation reinforcement practice and DNA sequence, mRNA sequence, amino acid sequence

Ascientist is studying muscle twitches in chicken quadriceps. to activate the muscle, he needs to provide stimulus to the

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to