Late adulthood or the old age is considered to start at age 65. According to Erik Erickson at this time it is important to find meaning as well as satisfaction. Theorists believe that activities that were started when they were young would be maintained as possible thus need to have proper diet and exercise.
Answer: Option B.
Explanation:
The first experiment of the passage shows that treatment with TGFBR1 and TGFBR2 antagonists led to lower levels of epithelial cell production. For this conclusion to be strongly valid, we want to show a positive correlation between TGFBR activity and epithelial proliferation.
Hypothesis is what you think will happen before the experiment, it isn't necessarily backed up by any sources or evidence. A scientific law is the observation of a phenomenon and a theory is the explanation both can be used together to back each other up.
A large asteroid or comet impacted the earth.
