Answer:
Common minerals in metamorphic rocks include quartz, feldspar, mica, calcite, and hornblende. Index minerals in metamorphic rocks indicate how much the original rock was metamorphosed, called the grade of metamorphism. Index Minerals minerals include chlorite, epidote, garnet, staurolite, kyanite and sillimanite.
Explanation:
Blood flow to the heart via the following vessels:
1. superior vena cava
2. inferior vena cava
4. coronary veins/sinus
Answer:
The correct answer is False.
Explanation:
Although marine anemones are a clear example of a predatory species, the relationship it has with clownfish is a relationship of mutualism.
It is called mutualism when two different species benefit from each other, which improves their conditions, such as the clownfish and sea anemones.
The clownfish use the anemone as its protector towards predators and also helps to feed since the fish attracts predators to the anemone and the anemone, it paralyzes them to eat, and then the clownfish ingest the remains.
Also, the clownfish help the anemone to the oxygenation of their tentacles through their swim. In spite of all these benefits, clownfish and sea anemones are not dependent on each other, since they can live without the other.
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Whales use their lower jawbone to the middle ear. whereby they can ear clearly while they are in the water. Human ears and dolphins ears they work the same . They receive sound directly from the air.
In similar way dolphins and human ears are placed in basic anatomical location which is same as on the head. Without a medium hearing is not possible.
The medium sound for human is air. Sound travels 343 meters per second in air and 147 meters per second in water. The most effective way of transmitting sound waves is through water.
We can say that the sound will be fast to travel in medium if the molecules are closer.
Answer:
Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress of the cell through the various checkpoints. Cyclins regulate the cell cycle only when they are tightly bound to Cdks.
Explanation: