A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
The cardiovascular system transports oxygen and nutrients to the cells and transports waste away from the cells
When your body gets overheated. This is a negative feedback loop. The arteries/veins will dilate letting more blood pass through. Your face tends to get red because there is more blood flow towards the surface in an effort to cool off. This is also why you sweat.
Answer:
B
Explanation:
It tells us a lot about why the argument is correct.
Oxidation and reduction. ... It refers to electrochemical processes<span> involving electron transfer to or from a molecule or ion changing its oxidation state. This reaction can occur through the application of an external voltage or through the release of chemical energy.</span>
