Answer:
behavioral separation
Explanation:
The separation leading to the speciation of the two groups of killer whales would be considered a behavioral separation.
<em>Behavioral separation or isolation is a form of separation that occurs between two groups of individuals (that use to be of the same group) as a result of preference for a particular behavior or set of behaviors.</em>
The preference for the behavior eventually leads to the two groups becoming separate species, a form of speciation known as sympatric speciation.
Answer:
a skin
Explanation:
Mechanical barriers physically block pathogens from entering the body. The skin is the most important mechanical barrier. In fact, it is the single most important defense that the body has against pathogens
Epinephrine
Epinephrine is usually produced by the two kinds the adrenal
glands and certain neurons. It plays an
important role in the fight-or-flight response by increasing blood flow and
also to muscles, output of the heart, pupil dilation, and blood sugar.
Answer:
Plant cells have a large central vacuole that takes up most of the cell’s space, and animal cells have many smaller vacuoles.
Explanation:
Plant cells are characterized by the presence of large vacuoles present in the center of the cell. The vacuole is large enough to occupy as much as 90% volume of the plant cell.
On the other hand, animal cells have a centrally located nucleus. They do not have large vacuole. Rather, animal cells have many smaller vacuoles that are present near the periphery of the cell.
Answer:
D
Explanation:
The geosphere is important it defines much of the environment we live in, controls the distribution of minerals, rocks and soils and generate natural hazards that shape the lands and impact humans.