Answer:
[NOT] stay engaged in the topic. A media source is considered valid if it is presented in a factual, unbiased way. If there is a slow Internet connection or limited access to certain sites, it is often better to _____ a video file before streaming it to use as part of a presentation. Download
Explanation:
Answer:
When the heat energy releases and formation of iron oxide.
Explanation:
When the heat energy releases and formation of iron oxide are the indications that chemical reaction takes place. during the steel wool demonstration. During the steel wool demonstration, heat energy released when the iron combine with oxygen forming solid iron oxide. So we can conclude that release of heat energy and formation of iron oxide tells us that the chemical reaction takes place.
Answer: A). Active transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration.
Explanation:
Sometimes cells require nutrients such as sodium and potassium to be transported from an area where they are in low concentration to an area where they are in high concentration.
This goes against the concentration gradient where substances are transported from an area of high concentration to one with low concentration as is the case in processes such as osmosis.
This process is called Active transport and describes the use of chemical energy to move nutrients from areas of low concentration to areas of high concentration.
Answer:
A. Egestion
Explanation:
Egestion is the removal of undigested food from body.
