Academic performance involves demonstrating the understanding and use of new information through a stylized set of performances which can vary widely – from essay tests to art projects to group presentations. Electronic portfolios can serve as repositories for such performance as well as for evidence-based learning.
O True
O False

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

positive reinforcement? ?

it is b. absorbs thermal energy

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.