substance a decomposes at a rate proportional to the amount of a present. it is found that 12 lb of a will reduce to 6 lb in 4.2 hr. after how many hours will there be only 1 lb left?

Snakes, dogs, and humans have a vertebral column. snakes and dogs have tails, and humans have vestigial tailbones. dogs and humans have limbs, but snakes do not. most reptiles lay eggs, but a few give birth to live young. what do these structures suggest about the evolutionary pattern between the three organisms? 1. snakes and dogs are more closely related than snakes and humans. 2. snakes and humans are more closely related than humans and dogs. 3. dogs and humans are more closely related than snakes and humans. 4. dogs, snakes, and humans share a common ancestor. 5. the early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.

If aaliyah bodyslammed her uncle without damon dash's and he just stood there petrified looking like a down syndrome ringworm, how much diamonds @riaa completely sprinkle covered over her feet before bowing down to congratulate her on owning all rights to the both of their entire careers merged together onto her resumes?

Darwin studied two different types of tortoises on the galapagos islands. sort the characteristics based on which tortoise they describe.