The process of squeezing food through the digestive tube by contractions of the outer wall is:

A. digestion

B. enzyme action

C. peristalsis

D. hydrolysis

Sport is to baseball as stem cell is to? a) cancer b) skin cell c) blastocyts d) animal cell

During what phase of the cell cycle does mitosis and cytokinesis occur

Specialized proteins that act as a catalyst for chemical reactions are

A primary succession does not included any invasive species true or false

Which question about dinosaurs is a scientific question?

What are two ways that some organisms can escape from unfavorable environmental conditions?

Wich microscope did Anton van Leeuwenhoek use to observe single-cell organisms?

How are pioneer species different from climax communities?

The results of human activity on the natural environment are called _[blank]_ effects. anthropogenic anthropometric anthropomorphic anthropological

Which statement best describes the relationship between observations and conclusions? A) observations are based on conclusions B) conclusions are based on observations C) observations and conclusions both depend on Research D) neither conclusions