Answer: True
Sometimes the use of condoms can't prevent STIs(sexually transmitted infections) because of the manufacturer fault. STIs that caused by lice is not protected too because the condom doesn't cover hair. Other than that, a condom provides a good physical barrier that prevents diseases that transmitted body liquid.
The right action is capillarity (or capillary force).
Capillarity is the interaction phenomenon that occurs at the interfaces between two immiscible liquids, between a liquid and air or between a liquid and a surface. It is due to the forces of surface tension between the different phases in the presence. It is used when the blotters suck the ink, the sponges soak with water, or when we dip some of its sugar in its coffee and that sugar becomes all black.
Yes, this observation is testable because you can do the experiment with your own controlled conditions and see if this with the milk would happen again.
It is qualitative observation because you use your senses such as sight, smell, touch, taste or hear to observe the results (in quantitative observations you use instruments for measurement).
Null hypothesis: The taste of the milk is the same when it is left on the counter (warm) and when it is left in the refrigerator (cold) or simply saying the place where we put milk doesn’t affect the milk taste
Hypothesis: The milk left on the counter is sour due to acidification of milk via bacteria that works on warmer place.
Independent variable (changed by a scientist in order to affect the dependent one) is a place where we put milk (temperature).
Dependent variable is milk (milk taste).
8) The answer is A and 9) the answer is C.
