12. the major cause of water pollution by industries a. plastics b. toxic chemicals c. pathogens d. sediments

2. if scientists identify an animal with bilateral symmetry and no segmentation, which phylum can it definitely not belong to? a. roundworms b. annelids c. mollusks d. flatworms

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Which event would lead to primary succession of a forest?