Which of the following pieces of evidence most strongly supports the idea that all life on earth evolved from a single ancient common ancestor?
a all life requires a constant input of energy from its environment
b all organisms use the same molecules (dna and rna) to function and reproduce
c all organisms reproduce themselves
d all organisms experience evolution

9. wind power creates pollution. water air soil noise

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy?