Nucleotide!
When attached in a polymer, they become a nucleic acid.
A. Separated twins develo traits that differ according to the environments in which they are raised
Answer:

Explanation:
In an atom, there is a dense center known as the nucleus. It is made up of two subatomic particles: <u>protons</u> and <u>neutrons</u>. The protons have a positive charge and the neutrons have no charge, so overall the nucleus is positively charged.
The third subatomic particles, negatively charged electrons, are located around the nucleus in a cloud.
The particles in the nucleus are
.
Answer:
The correct answer is: major depressive disorder.
Explanation:
Major depressive disorder, commonly known as depression, is a mental condition that is characterized by <u>continuous internal pain, low mood, low self-esteem and loss of interest in activities that were enjoyable before</u>.
This disorder can be heavily discapacitating as it can interfere in normal life and work-life as well, while also producing abnormal eating and sleeping habits.
Connie has lost her husband a few months ago and she is not recovering from the pain that it caused her, which makes her deeply unhappy, not interested in anything and incapable of performing common tasks on her daily life. These are all symptoms of depression.
Answer:
Starch
Explanation:
Any member of a class of enzymes that catalyze the hydrolysis (splitting of a compound by addition of a water molecule) of starch into smaller carbohydrate molecules such as maltose (a molecule composed of two glucose molecules).