Which scientist created tests that helped confirm that bacteria and other microorganisms cause a variety of diseases

Answer:

maybe it should be brain stem

Explanation:

because spinal cord is found in the lower part of brain stem.

Answer:

D. Cerebellum

Explanation:

Answer:

The kind of evolutionary mechanism responsible for both snakes is B) Sympatric Evolution. 

Explanation:

We need to study two species of snakes, the Emerald Tree Bow and the Boa Constrictor, they belong to the same genus. However, the former is tree-dwelling and needs high humidity whereas the latter is terrestrial and requires a dry environment.

To explain this phenomenon we present a similar example: Imagine that your family has lived in the same house for many years. After that, imagine that your sister moves out of that house and into a house in a nearby neighborhood. She begins a new family there and, through the years, her family continues to grow and live in this new house.  When your family separated, you became different groups of people from the same common ancestor. Eventually, you might even evolve enough to feel that there are more differences between you than similarities. When this happens in nature, it's called sympatric speciation. This process allows new species to evolve from a common ancestor, while the new and old species are still living in the same geographic region.

This example is almost the same as both snakes. Sympatric Evolution was responsible for this phenomenon.

Finally, we can conclude that the kind of evolutionary mechanism responsible for both snakes is B) Sympatric Evolution. 

Answer:

The correct answer will be option- formation of amino acids.

Explanation:

The DNA contains specific coding sequences called genes which contain codes for the formation of the proteins by the production of specific amino acids. The genes undergo two important processes: transcription and translation.

The genes present in the DNA forms a transcript molecule called mRNA via transcription process which gets translated to the amino acids as mRNA contains codons which code for specific amino acids. These amino acids get bonded to each other via a peptide bond and form proteins.

Thus, option- formation of amino acids is the correct answer.

the answer to this question is c