Where might a spring form?
between the saturated and unsaturated zones
at the bottom of a deep valley
on a mountaintop at the origin of a stream
O on the surface of a fast-moving aquifer

Largely uneconomic because they provide little profit or food surplusi think so

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.

Ilam  is the most commonly practiced religion

Although nelson mandela was arrested for treason and sentenced to life in prison, he was not arrested in 1964. he was arrested in 1962. therefore, letter b is false.