Change A Animal waste is acted upon by anaerobic bacteria to produce biogas change B biogas burnt as fuel which of these changes is a chemical change

Both Change A and B

Explanation:

Given that chemical changes is a form of change of matters that deal with the combination of various substances to form a new substance entirely that has different chemical and physical characteristics from its parents' substances.

Hence, when Animal waste is acted upon by anaerobic bacteria to produce biogas it is considered a chemical change.

Similarly, when biogas burnt as fuel it is also considered as a chemical change.

Therefore, in this case, the correct answer is "Both Change A and B" are chemical changes.

the answer is d (apex) good luck : ))

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.