Where does digestion and absorption take place in an earthworm?

The amino acids sequences for hemoglobin in humans and gibbons differ by one amino acid. This molecular similarity in these two species indicates that they___.

What are the building blocks of carbohydrates, lipids, and protein??

The gull eggs are 30,234 times more contaminated with PCBs than the phytoplankton. A:True B:False

Which of the following trace fossils is actually fossilized excrement

What will most likely happen if the level of greenhouse gasses continues to rise? Global temperatures will gradually decrease. Global temperatures will continue to increase. Global temperatures will fall rapidly.

Which of the following types of models is most likely to be used to predict earthquakes? a. idea model b. physical model computer model d. none of the above

What allows members of the same species to have different characteristics

Which of the following does Max represent to Feld in "The First Seven Years"? A. a chance to improve his own life B. a way to realize a dream C. an escape from a life of hard work D. a professional with solid values

Where is pyruvate made in the cell? A. Cell membrane B. Cytoplasm C. Nucleus D. Mitochondrion

Bio Bio bio question A scientific idea that has not been tested is a :