Answer:
respiration
Explanation:
respiration means break down of food for production of energy
photosynthesis is the process by which plants produce there own food
Answer:
Explanation:
The measurement <em>1246g</em> shows four figures. To show this measurement to <em>three signficant figures</em> you must change the last digit to 0 and round properly.
To report the measurement 1246g to three significant figures you must replace the last digit (the 6) with 0 and round the previous one (the 4) to the closest integer: 1250 is closest to 1246 than 1240, so the correct rounding is 1250.
In an integer number, the zeros after the last none zero digit are not sginificant figures; that is why the zero in 1250 g is not significant and this number has just three significant figures.
Answer:
"Rain mixes with pollutants in the air to interact with rock" is an example of chemical weathering
Explanation:
The first statement refers to something known as "freeze thaw" which is mechanical weathering.
The second and fourth statements also refer to mechanical weathering
Certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.
