Answer:
Ratio = 
Explanation:
Side of a cube, a = 20 µm

The surface area of a cube, A = 6a² (a is side of the cube)
The volume of a cube, V = a³
The ratio of the surface to volume ratio of the cell will be given by :

So, the ratio of the surface to volume ratio of the cell
.
It's a ! cnidocytes help in defence and also in capturing prey ! so answer is A !!
Answer:
B) Changes in the temperature and salinity of water.
Explanation:
<em>Options</em>:
A) Migration of bottom feeders into the region.
<u>B) Changes in the temperature and salinity of water. </u>
C) Migration of fresh water fish to places near the mouths of rivers.
D) Formation of breeding grounds for various species in the shallow waters.
Sea level changes are among the most relevant issues that our planet is facing due to climate change. This phenomenon impacts the salinity and temperature of the ocean because of the melting of glaciers, and ice sheets. Therefore, <u>melting ice alters the level of salinity of the water which, along with temperature, also effect the density of the ocean water, altering ocean currents and productivity.</u> These impacts alter the distribution, behavior, and ecology of marine organisms.
<em>*Note: The melting of the glaciers and ice sheets - result of anthropogenic climate change - has increased sea level.</em>
Answer:
C
Explanation:
Hybrid electric vehicles are powered by an internal combustion engine and an electric motor, which uses energy stored in batteries. A hybrid electric vehicle cannot be plugged in to charge the battery. Instead, the battery is charged through regenerative braking and by the internal combustion engine.
Answer:
Motor proteins <em>propel themselves along the cytoskeleton</em> using a mechanochemical cycle of filament binding, conformational change, filament release, conformation reversal, and filament rebinding.
Hope this helps :)