Answer: The correct option is B (self-replicating molecules, such as RNA and DNA)
Explanation:
The current theory of the process of evolution makes use of present day knowledge of genes and chromosomes to explain the source of genetic variation upon which natural selection works. These genes are discrete units of inheritance which determine hereditary characteristics. All the information for the inheritable characteristics of an individual are contained in these genes.
When a cell divides, the genes duplicate themselves so that each daughter cell has an identical set of genes as the original parent cell. These genes are passed from parents to offspring in the gametes of the parents.
Gene are found in the DNA( Deoxyribonucleic acid) molecules or RNA (Ribonucleic acid) molecules. These molecules are capable of self replication due to a process called mutation. Mutations are random changes in DNA that alter genetic information and sin introduce new characteristics. They may occur
--> in body cells or
--> during gamete formation.
Thus, evolution from vesicles to true cells is through self replicating molecules through the process of mutation which is the raw material for evolution
Basically:
Anaerobic: takes place in an environment without oxygen
Aerobic: takes place in an environment with oxygen
Hope this helps!
~Chrys
The statement "<span>Fast riverine floods include flash floods from intense thunderstorms" is true. The two variables that contribute to flash flooding are rainfall intensity and duration. The greater the intensity and duration of the rainfall is, the greater is the tendency to have flash floods. It can roll boulders, uproot a tree, destroy communities. It can eve can reach 30 feet or more. It can also trigger mud slides which is very dangerous.</span>
Answer: ,Option B.
The Earth's axis has a 23.5 degree tilt.
Explanation:
The Earth axis of rotation is tilted to 23.5 degrees which is relatively to the orbital plane, this lead to differences in seasons of the places on Earth at a particular time. The angles varies overtime but moon gravitational pull prevent it from shifting more than a degree. There is different in seasons in the northern and southern hemisphere because at a time one part of it exposed to the Ray's of sunlight than the other which lead how the Earth's revolve round it's axis.
