Answer:
an element is a pure substance which can not be spilt into simpler substances by chemical means
Explanation:
examples hydrogen, oxygen, copper
Explanation:
for 1 it has to be false cause cutting tree ain't good.
for 2 I'm not sure, maybe it's TRUE..
Answer:
Allopatric speciation occur due to various environmental factors with in the environment.
Explanation:
Speciation occur when two population become so genetically different and the can not interbred to produce fertile off spring. The allopatric speciation occur when population become sepret and diverge over time due to natural selection,genetic drift,and mutation.Genetic drift is the sudden loss of gene from a population which cause the population evolvation. Mutation is also change in the genetic makeup of an individual.Natural selection is the phenomena selected by nature and natural forces are involve to select the trait in a living organism.
Answer:
d
Explanation:
because when you plough your field for crops to grow rain falls for the crops to yeild well