Answer:
D. 95% of the energy expended to mine and produce items from virgin ore is saved by recycling.
Explanation:
It takes just 5% of the energy used in producing new aluminium from the raw ore to recycle scrap aluminium
Any change in allele frequencies in a gene pool is a mutation
Answer:
Amphibians
Explanation:
They had just shown up during the Carboniferous period and were still living in the water.
Sugar group, phosphate group and nitrogen bases.
