What is the term for a structure that has no use in an organism?

A) homologous

B) Index

C) Vestigial

D) Sedimentary

The clarity of lake water is affected by the amount of phytoplankton (marine plants), soil, clay, and other solids suspended in the lake. Suppose the concentration of carbon dioxide in the atmosphere changed from 340 ppm to 380 ppm from 1980 to 2005.

The genotype XXY corresponds to Klinefelter syndrome Turner syndrome Triplo-X Jacob syndrome

What cell parts are common to all of these cells? Cheek Cells Elodea Spirogyra Chlamydomanas ^ Those are the cells

During which phase of mitosis does the nucleus start to form again

What type of molecule speeds up chemical reactions in living things? A. Lipid B. Nucleic acid C. Protein D. Water

Calculate the density of mercury to the nearest tenth. Mass of mercury = 57 g Volume of mercury = 4.2 mL

Which phrase best describes a scientist?

True or false: natural resources can be man made

A scientist is studying a region of an ocean floor she discovers a long deep canyon that runs parallel to the coastline of a nearby continent what can she inferred from her discovery

The head ct results have come back, and here is what they show: there is no sign of tumor, bleeding, or skull trauma. in fact, the only abnormality is that the ventricles are slightly smaller than normal.