Answer:
Originally, the distinction was based on morphological differences. However, it soon became that some types of organisms had different forms at various stages in their lives, here is why
Explanation:
changed genes is passed on to the next generation. Most mutations are bad, but some of them make the organism more successful in its life. Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. (geologic times)
Answer: papillary muscle
Chordae tendinae is a connective tissue that used to prevent the heart valve to be flapped away. It like a string that connected into the valve and makes it look like a kite. Papillary muscle is the part that anchoring it to the heart wall.
<span>There are three major groups of mammals, categorized on the basis of their method of reproduction. Monotremes lay eggs to have children instead of having the mother bear them. The second type of mammal is the marsupial, which are non-placental animals who carry their young in their pouches. Eutherians are the third group who are placental mammals.</span>
I believe there is a pill for that. I think vets can do it too.
