What part of a blade of grass allows the grass to stand up

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

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

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?