Which of the following is not a characteristic of a climax community?
a. high levels of biodiversity
b. presence of complex organisms
c. conditions suitable for all organisms
d. experiences no change

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.

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.