They use their spines with tiny hairs on them to move and push food towards their mouths.
Answer:
B. Electron Cloud
Explanation:
It would not be A because, electrons orbit the nucleus so they cannot be physically IN it.
It cannot be C either because, we are talking about an atom not a cell. Mitochondria is only present in cells.
Answer:
1.Carbon is the basis of all living things
3.Nitrogen is found in certain foods
4.Oxygen and hydrogen combine with each other to form water
6.Carbon, oxygen, hydrogen, nitrogen, phosphorus and sulfur are found in organic compounds
Explanation:
Answer:
Answer is D. Variation does not exist within a kind.
Explanation:
Linnaeus is regarded as the father of classification. This is because, his method or system of classifying and naming of organism, known as taxonomy, is still relevant up till today.
He formulated the binomial nomenclature, which is the modern system of naming organisms.
Linnaeus system includes domain, kingdom, phylum, class, order, family, genus and specie.
Answer:
total blood volume
Explanation:
Resistance to blood flow or vascular resistance refers to the slow down of the blood flow due to friction between the flowing blood and the walls of the blood vessels.
The resistance to blood flow is regulated by the viscosity of blood, total length, and diameter of the blood vessels. Higher blood viscosity imparts more resistance to the blood flow. The reduced diameter of blood vessels also restricts the blood flow through the blood vessels. Similarly, the resistance to the blood flow is directly proportional to the total length of the blood vessels.
However, total blood volume present in the body of the organisms does not affect vascular resistance. The total blood volume affects the blood pressure which in turn would affect the systemic vascular resistance.
