Which THREE factors might keep some of the dandelion seeds from becoming plants that produce their own seeds?
A. Other plants that block sunlight
O B. The distance a seed travels
C. Animals that eat plants
D. Lack of adequate soil and water

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation