The egyptians were among the first to use on their ships to improve transportation. a. oars b. sails c. engines d. rudders select the best answer from the choices provided

Historical vs today's presidents (compare)

Which of the following actions do the national response and recovery policies (national response framework, national infrastructure protection plan, national incident management system) not provide guidance on?

Often, a goby fish and a shrimp will live together in a burrow the shrimp has dug in the sand. the shrimp is almost blind and therefore is unable to see predators approaching when he is outside of the burrow. when the shrimp is in danger, the goby fish touches the shrimp with its tail to warn him. then, both go back into their burrow for safety. which type of relationship does this represent? a. mutualism b. parasitism c. commensalism d. predator/prey