Why do the paleoanthropologists believe that the bones may have been intentionally placed in the cave?

Describe how the genetic material changes when a cell goes from interphase into the mitotic phase. why is this important?

How do cheek cells differ from elodea cells?

A few years ago Robert noticed a few gray hairs. A little frustrated, he was able to isolate and pluck them out one by one; however, recently his gray hairs have become overwhelming in number and he has more gray hairs than brunette.

For years, biologists called most prokaryotes "bacteria." Which statement best explains why a biologists now divide prokaryotes into two distinct categories?

Erosion affects what types of land forms?

Which of the following statements about the greenhouse effect is true? A. Life on earth is suffering because of the greenhouse effect. B. All greenhouse gases are harmful. C. Life on earth would not exist without the greenhouse effect.

Do all organism in the same ecosystem have the same carrying capacity

The locomotive behavior of earthworms is enabled by contraction of their longitudinal and circular muscles; this is seen through their typical burrowing behavior.

When the wind blows, this spins.

Which class of biomolecule do the molecules in the table belong to? A. proteins B. carbohydrates C. nucleic acids D. lipids