Identify the independent variable Identify the dependent variable. Which plants grew taller those in the experimental group or those in the control group? Describe why this is a controlled experiment

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

The production of cells during mitosis into specialized function is recombination or differentiation