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Scorpion4ik [409]
2 years ago
9

How is self-pollination similar to cross-pollination? how is it different?.

Biology
1 answer:
lisov135 [29]2 years ago
8 0

Answer:

Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.Explanation:

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The dense area of a cell that contains nucleic acid is the.......
torisob [31]
I think the answer is NUCLEUS.

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3 years ago
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What soil develops on top of there parent bedrock?
maw [93]

Answer:

I think it's top soil.

6 0
3 years ago
A countercurrent heat exchanger enables an animal to _____.
hodyreva [135]

Answer:

Regulate heat throughout it's body,

Explanation:

Countercurrent Heat Exchange is a normal and varied mechanism in organisms that utilizes parallel pipes of flowing fluid in opposite directions in order to save energy, such as blood flow. For example, a whale's tongue uses this system through the blood flow to the tip of the tongue, where the countercurrent heat exchange system heats up blood returning to the body.

6 0
2 years ago
Research wolff's law. how does the formation of torus mandibularis relate to this theory?
Sunny_sXe [5.5K]

Answer:

According to wolff (German Anatomist and Surgeon),the adaptation shown by a  bone in an  healthy animal or human depends on the loads it bear.Therefore, changes in the structure or type  load the bone bears, will lead to a corresponding change in the bone bearing the load.A practical example is the development of the bone in hand used by a professional tennis player to hold racket.The bones of this hand usually appear stronger and well developed  than the other hand.

When a bony outgrowth, emerges in the mandible close to the surface of the tongue, this outgrowth is called Torus mandibularis. It is commonly found near the premolars, in a bilateral conditions. It is common among the Asian and the indigenous people of  Canada, Greenland and Alaska(the Inuit).

If it is caused by bruxism (teeth grinding)This will create stress on the impacted bone.Therefore based on Wolff's theory, the impact of this  local stress,(teeth grinding) may cause transformation in the shape of the part of the mandible associated with the teeth,an therefore leads to  the  bony outgrowth.

This theory may also be interpreted  with Lamarck theory  of use and disuse.

6 0
3 years ago
30 points
Tcecarenko [31]

Answer:because of the amount of movement of tectonic plates along the area

Explanation:

The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes. Its length is approximately 40,000 kilometers (24,900 miles). It traces boundaries between several tectonic plates—including the Pacific, Juan de Fuca, Cocos, Indian-Australian, Nazca, North American, and Philippine Plates.

Seventy-five percent of Earth’s volcanoes—more than 450 volcanoes—are located along the Ring of Fire. Ninety percent of Earth’s earthquakes occur along its path, including the planet’s most violent and dramatic seismic events.

The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. That is, the plate that is underneath is pushed down, or subducted, by the plate above. As rock is subducted, it melts and becomes magma. The abundance of magma so near to Earth’s surface gives rise to conditions ripe for volcanic activity. A significant exception is the border between the Pacific and North American Plates. This stretch of the Ring of Fire is a transform boundary, where plates move sideways past one another. This type of boundary generates a large number of earthquakes as tension in Earth’s crust builds up and is released.

5 0
3 years ago
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