Nearly 30 percent of the native flora in the United States is considered to be of conservation concern. Without human intervention, many of these plants may be gone within our lifetime. For the native birds and mammals of the United States to survive, plant life must be conserved. What product of photosynthesis do plants provide to all animals? A. oxygen
B. carbon dioxide
C. light
D. hydrogen ​

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

List two modern organisms that have pentameral symmetry

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?