Your best friend passes you in the school hallway and glares at you without speaking. You think, Now, why did she do that? One possible explanation could be that she saw you flirting with her boyfriend. Within the framework of the scientific method, that possible explanation for your friends behavior would be considered a(n), which will remain tentative until it has been tested.

Hypothesis

Explanation:

Hypothesis is more than a wild guess but less than an established evidence.

Here you have no evidence why. your friend snubbed you so it's still a hypothesis.

his week a heat wave will be hitting, and most of the country will be experiencing temperatures above average for july. due to humidity, the temperature outside can feel even warmer than it actually is. this adjusted temperature, often referred to as the “feels like” temperature is called the heat index. the chart shows the heat index, which is calculated based on temperature and relative humidity. use this chart to answer the following questions.  

answer(b) keep oxygenated and deoxygenated blood separate;