The answer is 254 bc you just subtract
The right answers are: B) and C)
Answer:
A. Mutualism
Explanation:
Mutualism is a type symbiotic relationship which involves an ecological interaction or association between organisms of different species in which each specie benefit from each other. Sometimes, both of the species depend on each other for survival.
In this scenario, the bird benefits (food) from the mammal by eating the insects off the mammal body while the mammal also benefits because it gets rid of blood sucking insects which are harmful to them.
For NaBr(aq) hydrogen gas is formed at the cathode. Hydrogen in water is reduced to hydrogen gas. For NaBr(aq), bromine, Br2(l), will be produced instead of oxygen gas at the anode.
<span>For sodium sulfate hydrogen gas is formed at the cathode. Hydrogen in water is reduced to hydrogen gas. Oxygen gas will be produced at the anode. </span>
<span>Should someone suggest that sodium metal is formed at the cathode, rest assured that that can't happen. Sodium metal reacts with water to make Na+. </span>
<span>Lead(II) iodide is insoluble in water. Therefore, not much will happen since there is no electrolyte.</span>
The number of valence electrons = group number
e. g 1 valence electron in group IA
