Parts of compound and microscope and their functions answer parts function
draw tube 1
2 connects to
the to the
objective
lenses
revolving nose 3
piece

4 services as the

Functions of different parts are given below.

Explanation:

Draw tube is a part of microscope that connects the eyepiece to the objective lenses. Objective  lenses combine with the eyepiece lens in order to increase magnification levels of the microscope. Revolving nose piece also known as turret which have objective lenses which allow the users to rotate this part to change the objective lenses and adjust the magnification power.

answer

ben’s food poisoning was caused by cross-contamination

explanation

cross-contamination in food occurs when harmful bacteria is transferred to food from other foods, utensils or cutting boards. it happens often when handling raw meat , sea foods and poultry. in this case, because ben did not wash hands before and after handing the poultry, chances that bacteria transfer   from the poultry to the vegetable are high.