An instructor had students in a freshman P. E. class keep tr…

An instructor had students in a freshman P. E. class keep track of the number of sit-ups they completed during class. Results from Survey Number of Sit-ups Frequency 3 – 9 5 10 – 16 0 17 – 23 6 24 – 30 3 31 – 37 7 38 – 44 4 45 – 51 4 52 – 58 4   Which of the following statements is true about this distribution?

You were off hiking one day and found some beautiful tremoli…

You were off hiking one day and found some beautiful tremolite crystals. (Tremolite is a relatively common amphibole mineral.) You X-ray your sample and find that you get a good diffraction pattern. But, when you compare it to standard patterns you discover that all the peaks are at slightly greater angles than expected. What could explain this?

Based on Figure 1 (adapted from The Human Microbiome Project…

Based on Figure 1 (adapted from The Human Microbiome Project Consortium (2012) Nature), which of the following statements is true?  Choose all that apply. Figure 1. Bray-Curtis beta diversity among subjects by body habitat, grouped by area, as measured using the relative inverse Simpson index of genus-level phylotypes (cyan), 16S rRNA gene OTUs (blue), shotgun metagenomic reads matched to reference genomes (orange), functional modules (dark orange), and enzyme families (yellow).   The Human Microbiome Consortium (2012) Structure, function and diversity of the healthy human microbiome. Nature. 486:207-214.