What are phytoplankton and zooplankton? microscopic plants and animals
fossils of plants and animals
types of fossils fuels
stored solar energy

All organisms contribute some water to the water cycle by conducting

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm