Suggest what the effect of using growth hormone on meat cattle might be

Natural BGH and rBGH both increase the level of another hormone called insulin-like growth factor (IGF-1) in the cow.

Beef cattle are often given steroids to increase and speed growth. Common steroids include:

Major groups such as FDA and Food and Agricultural Organization state track level of hormones in food. They state that the levels of hormones in food are safe to eat. Not everyone agrees.

Explanation:

Hormones are present in all animal products. Some are natural, others may be added through supplements. Hormones and steroids are given to livestock. It can increase the number of dairy products and beef.

FDA establishes the acceptable safe limits for hormones in meat. A safe level for human consumption is a level of drug in the meat that would be expected to have no harmful effect in humans based on extensive scientific study and review.  

c.

explanation:

there is none because earth is stationary and flat.