Answer:
The first layer (crust) is rock
The second layer (Mantel) Is molten rock
The third layer (outer core) is liquid iron and nickel
The fourth layer (inner core) is solid iron and nickel
Hope this helps :)
Answer:
The ecological footprint may be defined as the dependency of humans on nature. The ecological footprint support the economy or people of the country.
The main consequences that are related to the ecological footprints are the depletion and decrease of the natural resource. This might also cause the habitat loss of other species and the habitat fragmentation as well. The consequences also includes the increase in the pollution and natural calamities in an area.
Answer:
A.
Explanation:
Synergist muscles are those muscles in body that helps or are responsible to help the same set of joint in action. They tend to serve as agonist. This muscles helps to act or produce action around a moveable joint.
An example of synergist muscle is biceps brachii that helps to perform actions in forearm flexion. a synergist can also serve as a fixator at the muscles origin.
Therefore, the correctanswer is option A.
A. Scientific ideas are changed when better ones are found.
Answer:
Quorum sensing.
Explanation:
Quorum sensing may be defined as the phenomena by which the bacteria can detect the specific stimuli and respond towards the cell population density. This process helps in coordinating gene expression.
Quorum sensing is used in prokaryotes for the cell to cell signalling and cell communication as well. The main evolution of quorum sensing in bacteria was to relay the information and helps in cell signalling by releasing the specific toxins. From the evolutionary point, the organism that are capable of quorum sensing would survive more in their environment, adapt well in their environment.
Thus, the answer is quorum sensing.
