Answer:
<h2>A</h2>
Explanation:
1. Nucleus is a ball like structure which is found in the center of the cell only in eukaryotic cell, true nucleus is absent in prokaryotes.
2. Nucleus contains nucleic acid and is have double membrane which contain pores though which transport of molecules occurs.
3. DNA replication , transcription and RNA splicing occur in the nucleus.
Not entire sure because I haven't taken human anatomy but I'd guess it would have to be the digestive enzymes breaking it down
Answer:
<h2>Mechanical waves require material medium to be able to travel .</h2>
The correct answer is D. Pioneer species
Explanation:
In biology, the term "pioneer species" refer to the first species that colonize new environments or environments in which there is no biodiversity for example lands that have been affected by fire, lava, etc. These species are in most cases plants or small organism that are resistant and able to adapt to the harsh conditions of new land. Additionally, this concept differs from keystone and foundation species because these two concepts describe species that have an important role in the ecosystem rather than those that first live on new land. Therefore, the first species to live on new land are the pioneer species.
<span>Bariatric surgery is a surgery created to help one lose weight. The set-point theory says that the body’s regulatory controls help a person maintain a specific body weight as time goes on. Bariatric surgery works to establish a new set-point by altering body weight and establishing weight loss results.</span>
