The vacuoles in a plant cell are much more larger and take up a large portion of the cell but animal cells vacuoles tend to be smaller. The plant cells vacuole is permanent when the animals is temporary. A plant cells vacuole is formed by budding off the membrane, the animal cells vacuole is formed by the organelle called the Golgi body.
Answer:
Lead is the major pollutants of high-tech gadgets, occupying 40%, while other metals 75%.This is because Pb forms lager components of these gadgets.For example a desktop computer contains about 10 pounds of Pb.
The lead to recycle these material to prevent pollution is important.
Explanation:
A bacterium called Vibrio cholerae causes cholera infection. The deadly effects of the disease are the result of a toxin the bacteria produces in the small intestine. The toxin causes the body to secrete enormous amounts of water, leading to diarrhea and a rapid loss of fluids and salts (electrolytes).
Answer:
September Equinox
Explanation:
it occurs when the sun crosses the celestial equator from north to south
Answer:
The correct answer is : 144.
Explanation:
Given:
K or carrying capacity = 2000
N or population size = 1200
rmax or maximum per capita growth rate = 0.3
formula:
growth rate = 
Solution:
by the formula ,
growth rate =
= ![360 [\frac{800}{2000}]](https://tex.z-dn.net/?f=360%20%5B%5Cfrac%7B800%7D%7B2000%7D%5D)
= 360 × 0.4
= 144
Thus, the correct answer is : 144.
