Answer:
A
Explanation:
I believe its a because the nuclear envelope dissolves is one of the first things that happen and chromosomes form.
Mucous coats and protects the inside of the stomach
The correct answers are "sometimes, no change or reduced".
If our sensory systems are exposed to the same exact stimulus repeatedly, sometimes it causes our sensory systems to react and sometimes it has no effect. In some cases, it may have a reduction of sensitivity, but sometimes it has no effect to our sensory systems.
Answer: Has a metallic luster and has a black streak.
Explanation: