Which choice best describes an independent variable in a scientific investigation? An independent variable is the one variable changed and tested by a scientist in a scientific investigation. An independent variable is an educated guess that a scientist makes after observing something interesting. An independent variable is one part of the hypothesis a scientist writes prior to beginning a scientific investigation. An independent variable is the fastest way to measure the success of a scientific investigation.

Which one of these is a involving in both sexual and asexual reproduction

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?