PLEASE HELP M! NOT FOR BEGINNER! 1. Mountains on the bottom of the Atlantic Ocean were made from?

2. The average elevation of the Grand Canyon is 2,200 feet above sea level. Which of the following could be an explanation of why there are fossils at the top of the canyon?
A. All of the fossils came from things that lived in the Colorado River.
B. The canyon was covered by the ocean and the water receded (went down).
C. The canyon was once covered by the ocean but the land receded (went down).
D. It is still part of the ocean, that’s why there are marine animals there.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

b. read the phase at the intersection of any given temperature and pressure.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]