Pollution from factory discharges and waste dumping. Also biodiversity from deforestation and other natural habitat losses
Answer:
common meaning of tree is :
supply of oxygen
Answer:Fossil Record
Explanation:
Fossils provide evidence that organisms from the past are not the same as those found today, and demonstrate a progression of evolution. ... The resulting fossil record tells the story of the past and shows the evolution of forms over millions of years.
Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants. The totality of fossils is known as the fossil record.
The fossil record, however, is quite incomplete. Here's one major reason why: Sediment has to cover an organism's remains in order for the long fossilization process to begin. ... So like the mineralized bones themselves, the fossil record is an incomplete framework that scientists flesh out through additional methods.
