Broca's area<span> is located in the lower portion of the left frontal lobe of the brain. </span>Broca<span> examined this part of the brain when dealing with people who had speech impairments to determine that it is </span>responsible for<span> the production of words and speech.</span>
Answer:
1. 100% percent effective
2. IUDs
Adrenaline. When the student witnessed the accident his fight or flight actions kicked in
Enzymes work the best in certain pH conditions and ranges in regards to base and acidic. If the enzyme is no longer in that range, it could denature(change shape), which would lead to the chemical reaction not working. I hope this is right or helped!