Which among the substances are elements Please help I need answer now

Which of these is least likely to be an adaption? a. a mouse digs a hole to hide from predators. b. a snake bites its prey to deliver it deadly venom. c.a jackrabbit has large ears that it release body heat. d.a parrot learns to say its owner's name.

Answer this asap. why did the americans go to china? a. trading b. exploration c. land d. live stock

Which is the most reasonable capacity of a water pitcher. m a 2 ml b 20 ml c 2 l d 20 l