Organisms contain different levels of organization within their bodies. Arachnoidiscus ehrenbergi, pictured below, is a single-celled organism that is part of the group of algae known as diatoms. A microscopic image of Arachnoidiscus ehrenbergi.
Photo by Gordon T. Taylor, courtesy of the NOAA

Which level of organization is seen in both Arachnoidiscus ehrenbergi and the human stomach?
cell
tissue
organ
organ system

Four different thermometers were used to measure the temperature of a sample of pure boiling water. the measurements are recorded in the table below. thermometer temperature reading 1 temperature reading 2 temperature reading 3 w 100.1°c 99.9°c 96.9°c x 100.4°c 102.3°c 101.4°c y 90.0°c 95.2°c 98.6°c z 90.8°c 90.6°c 90.7°c the actual boiling point of pure water is 100.0°c. what can be concluded from the data about the reliability and validity of the thermometers?

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm