15 POINTS!! THE SECRETARY:

The secretary wants to improve her work speed and to do this she wants to test out new keyboard layouts. she will type the same passage ten times on each of three different keyboards plus her original QWERTY keyboard.

What is the independent variable?

What is the dependent variable?

What would be 3 constants for this experiment?

What would be a good hypothesis for this experiment?

What is the control group?

What units would we be using for this experiment?​

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,