Match these machines with their examples. 1. seesaw wedge 2. pencil sharpener third-class lever 3. bottle opener wheel and axle 4. forearm second-class lever 5. nail first-class lever

Explanation:  

Simple machines make our work easier. There are many types of simple machines.

(1) Seesaw is an example of a first-class lever. In the first class lever, the fulcrum is present in the middle of the lever.

(2) Pencil sharper: It is a compound machine. It consists of wheel and axle and wedge also.

(3) Bottle opener: It is a type of 2nd class lever. In this, the fulcrum is present at one end.

(4) Forearm: It is an example of a third-class lever. Fulcrum is present at one end in the third class lever.

(5) Nail: It is an example of the wedge as all knives or nails are wedges.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.