1) what is the difference between a measurement and an observation?
question options:
measurements are made with tools; observations are not.
observations are biased, while measurements are always unbiased.
measurements are compared to a standard; observations are not.
observations are only indirect ways of gathering data.
2) understanding how your heart works can best be done by which of the following?
question options:
measuring your pulse
making a model that simulates the heart’s functions
observing how you respond to exercise
hypothesizing about how the heart works

1) Measurements are compared to a standard, while observations are not

2) Making a model that simulates the heart's functions

Explanation:

measurements follow a specific system or method, like cm or inches.

observations are just things noticed or comments about something

hope this helps you!! feel free to leave any questions in the comments :)

1) Measurements are compared to a standard, while observations are not

2) Making a model that simulates the heart's functions Explanation:

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right