Hannah has information about an object in circular orbit around earth.

mearth = 6.0 × 1024 kg

g = 6.67 × 10–11 startfraction m superscript 3 baseline over kilograms times s superscript 2 baseline endfraction.

what additional information does hannah need in order to calculate the tangential speed of the orbiting object?

the mass of the orbiting object
the distance of the orbiting object to earth
the orbital period of earth
the radius of earth

the backbone of the dna and rna compound is sugar phosphate.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,