HELP ASAP What occurs in lymphocytes in the thymus as they develop into T-cells? They learn to differentiate self from non-self materials.

They learn to produce other blood cells.

They learn to phagocytize foreign invaders.

They learn to destroy unnecessary granulocyte invaders.

b

Explanation:

They learn to produce other blood cells

Explanation:

I just look it up on so I hope its right

answer: a. same unit

explanation:

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =