B. because the rock is formed and it goes younger as it grows the rock is still old on the inner layers but it adds new layers as it goes
The first person that answered is correct just to let you know!
1. brown and red in color to help blend into their dry habitat
2. a weasel-like body that helps them maneuver around bushes, trees, and predetors
1. they typically live alone and hunt mainly during the night time. this helps them keep a low profile in large plains
2. they made a wide variety of sounds, some for fun, some for mating, some to luring prey
Answer:
When starfish were removed from their environment, the species richness of that area went down. This was because the starfish ate the mussels, and when the starfish were removed, the mussels became abundant and preyed on many of the other species.
This experiment showed that the starfish were a keystone species. A keystone species is a species that has a low biomass but a large impact on the community they are living in.
