Answer:
Explanation:
1970s
In the early 1970s, DuPont's Kevlar ballistic fabric was invented. The fabric was originally intended to replace steel belting in tires, and it was extremely strong. Waterproofing and additional layers of fabric were added to the Kevlar to make the vests more durable and wearable.
Answer: Humor great stress reliever because it releases cortisol and epinephrine along with endorphins which make you happy and can reduce physical pain.Laughing strengthening our immune system by releasing antibody- producing cells which protects your body.Laughing is the reaction of the motor region of your brain becoming active.
Explanation:
The thesis is usually at the beginning of the essay. It states what you will talk about in the essay. It's kind of like a preview.
