A
The Earths axis is tilted approximately 23.5 degrees (which is the reason the Earth experiences seasons).
Answer:
Option (e).
Explanation:
Karl Woese was an biophysicist and microbiologist. He was known as the originator of rRNA sequences in 1967.
Karl determines the 16rRNA sequence by the technique pioneered by Woese. He breaks the prokaryotes into two groups and discovered the third domain of life.
Thus, the correct answer is option (e).
I believe It is called an ice age
Answer:
Promoter is any component added to a catalyst to increase activity or selectivity. Examples are tin added to platinum reforming catalysts to improve selectivity to coke formation and chloride added to isomerization catalysts to increase activity.
Explanation:
comment how it helps
''The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears. It was once thought that Cambrian rocks contained the first and oldest fossil animals, but these are now found in the earlier Ediacaran (Vendian) strata.''