5. if an average of 421,140 earthquakes occur
annually, what percentage of these earthquakes
are minor earthquakes if 49,000 minor
earthquakes occur annually?
prepara

11.63 percentage of the earthquakes  are minor earthquakes

Explanation:

Given:

The number of earthquakes that that occur  annually = 421,140

The number of minor earthquakes that that occur annually  = 49,000

To Find:

Percentage of minor earthquakes =?

Solution:

let the percentage of minor earthquake be x

then

x =

x =

x =

x= 11.63

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: