5. A Biology class is collecting samples from a local creek. During week 1 they collected 150,265 samples from the creek. During week 2 they collected 75,280 samples. During the last week of the project, the class collected 101,015 samples.
a Convert the weekly totals to scientific notation
b. Over the course of the project how many total samples did the Biology class collect? (Use the scientific notation form of
the numbers to perform the calculation). Provide your answer in scientific notation Show all work.

When does dna replication(make a copy of itself)?

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.

An easy way to calculate the amount of energy available at each level is to what?