A researcher plans to draw a cladogram to show the most recent common ancestors of mammeals, reptiles, amphibians, and birds. He needs to choose a group from the table as a sample to study the relationship among amniotic eggs, feathers, hair, and double eyelids from each organism. Which sample group does the researcher use to draw the cladogram?

Sample Group Species
A FROGS, BEARS, SANKES, DEER
B FROGS, DEER, SNAKES, LIZARDS
C FROGS, PARROTS, LIZARDS, OWLS
D FROGS, SNAKES, OWLS, BEARS

what's the question?

the man is bald so he has no hair to get wet

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.