Raynaud's phenomenon.
Scleroderma is a group of autoimmune diseases that may affect different parts of the body with special intensity in the skin. Some of the affected structures may be blood vessels. Because of this, when exposed to cold, vasoconstriction occurs and the Raynaud's phenomenon is manifested in the extremities of the body.
Answer:
A. three pounds
Explanation:
it definitely doesn't weigh ounces :)
I believe you're looking for "invasive species"
Answer:
Villi, alveoli and nephrons are similar as :-
B. They provide large surface areas for molecular exchange.