The basic components of a mature mammary gland are thealveoli<span> (hollow cavities, a few millimeters large) lined with milk-secreting cuboidal cells and surrounded by myoepithelial cells. These </span>alveoli<span> join to form groups known as </span>lobules. Eachlobule<span> has a lactiferous duct that drains into openings in the</span>nipple<span>.
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Answer:
C
Explanation:
When it precipitates, the acid in the soil becomes dissolved forming an acidic solution. The low pH solution dissolves the calcium ions in the soil washing them away in runoffs and also leaching them deeper into the soil. This depletes the calcium ions hence making them unavailable to the birds. Calcium intake is important in birds because the ion is a significant component of eggs shells (makes them strong and not brittle hence the eggs don’t break easily)..
Answer: Asthma
Asthma is an allergic reaction
characterized by the constriction of the bronchial tubes. Asthma<span> (AZ-ma) is a
chronic (long-term) lung disease that is characterized by the constriction of
the bronchial tubes or airways. It
causes chest tightness, shortness of breath, whistling sound when you breathe, and
coughing. </span>
The organism in this photograph would most likely produce oceanic sediments that are <span>calcareous.</span>
Answer:
The student's claim is wrong
Explanation:
Grasshoppers like most insects, have an open circulatory system.
A closed circulatory system is that type of circulatory system that can be seen in mammals, reptiles, birds and other higher organisms. it involves the movement of bodily fluid throughout the body through the use of vessels.
A grasshopper has an open circulatory system because its "blood" is not pumped in vessels, but rather, fills all the cavities of its body. this is usually common for less complex animals with low metabolism rates
