Increase crop production food engineers combine two plants so that each plant strength compensates for the others weakness what is this technique called

Cross breeding

Explanation: Cross breeding can be defined as the method by which two plants can be crossed to produce the desired character and compensate the useless characters shown by the plants individually.

Suppose a plant produces pink flower but small slower and another plant produces white flower but big flower.

If we want big pink colored flower then, these two plants can be crossed among each other so to produce the desired characters and hide the useful characters.

the atomic mass is the bottom number on the element.

-steel jelly

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.