The giraffe head is higher than its heart so the blood pressure in the head must be lower than in the heart. The pressure is directly related to the density, gravity, and the height. The calculation would be:
<span>P = ρ*g*h
</span>P= 1.05* 10^3 kg/m3 * 9.8m/s2 * 2m= <span>20 580 pascals= 20.58 kpa</span>
<span>The answer
is ii). Invasive species spread rapidly
in the new habitat/environment in which they
are introduced. They spread rapidly due
to lack of natural predators in the new environment
hence reproduce unchecked. They upset the balance of an ecosystem and cause environmental
damage. </span>
I don’t know but have a nice day
Answer:
(2) low power: 100 small pollen grains
high power: 25 large pollen grains
Explanation:
Compound light microscopes are devices used to greatly magnify objects. They have several objective lenses, a low-power lens magnifies 10 times (10X) the objects, and the high-power lens magnifies them 40 times (40X).
For that reason, when observing the pollen grains with the high-power lens the student will see them bigger than with the low-power lens. However, the field of view (the visible area through a lens) is reduced when a higher power lens is used, so fewer pollen grains will be seen.
The answer therefore is the option of higher number of pollen grains of small size for the low-power lens, and lower number of pollen grains of larger size for the high-power lens.
Answer:
The extracted lipids covered twice the surface area of the intact red blood cells.
Explanation:
In 1925 two dutch scientist performed this experiment and they come to know that the basic structure of the membrane is phospholipid bilayer which serves as a stable separator between the two sections. Thats why the lipids they had extracted was covered twice the surface area of the intact red blood cells.
