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irina1246 [14]
3 years ago
6

How did early humans use minerals and rocks?

Biology
1 answer:
anastassius [24]3 years ago
5 0
The discovery of fossils in graves and in archaeological digs suggest that humans were already collecting unusual shaped rocks or minerals in prehistoric times. ... Minerals were used for cosmetic purpose but also for medical use and therefore collected in the field.
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Drag each label to the correct location on the image. Smooth hair is dominant in horses, and curly hair is recessive. Black hair
ruslelena [56]

Answer:

Smooth hair is dominant in horses, and curly hair is recessive: Ss

Black hair is dominant, and chestnut hair is recessive:  Bb

Explanation:

Dominant traits are the strong traits pass in the next generation and an individual show dominant traits while recessive traits are the weak alleles that are less likely to pass in the next generation.

It is given:

Smooth hair = S

Curly hair = s

Black = B

Chestnut = b

So according to this, horses with Smooth hair as dominant trait and horses with curly hair as a recessive trait will be referred as <u>Ss</u> and Black hair is dominant, and chestnut hair is recessive will be referred as <u>Bb.</u>

3 0
4 years ago
Ethylene is an organic compound produced by ripening fruits. In a controlled experiment, researchers found that ethylene gas sti
luda_lava [24]

Answer:

<h2>Ethylene is a gaseous hormone in plants, it is a fruit ripening hormone.</h2>

Explanation:

Ethylene is a chemical signal through which ripening fruits trigger the ripening process in fruits, Studies on components of ethylene signaling have shown a linear transduction pathway leading to the activation of ethylene response factors. However, the whole pathway by which ethylene selects the ripening-related genes and interacts with other signaling pathways to regulate the ripening process still not yet fully known. Most fruits produce ethylene that starts the ripening process. Its level in under-ripe fruit is very low, but as fruit develop, the production of ethylene become larger that speed up the ripening process of fruit.

4 0
4 years ago
What is an electron?
Len [333]

Answer: B. The smallest part of an atom

Explanation:

Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom. Protons and neutrons are found in the nucleus. They group together in the center of the atom.

6 0
4 years ago
Which process must occur for a muscle to be able to relax?
Anastasy [175]
<h2>Answer:</h2>

<u>A. The concentration of calcium in the myofibril must decrease. </u>

<h2>Explanation:</h2>

Each time we move a muscle, it requires the joined activity of trillions of myosin engines. Our muscle cells use calcium particles to facilitate this monstrous atomic exertion. At the point when a muscle cell is given the sign to contract from its related nerves, it discharges a surge of calcium particles from an uncommon intracellular holder, the sarcoplasmic reticulum that encompasses the groups of actin and myosin fibers.

The calcium particles quickly spread and tie to Tropomyosin on the actin fibers. They move shape somewhat and enable myosin to tie and start moving up the fiber. These trillions of myosin engines will keep climbing, getting the muscle, until the calcium is evacuated.  

The calcium pump enables muscles to relax after this furious flood of calcium-instigated constriction. The siphon is found in the film of the sarcoplasmic reticulum.

6 0
3 years ago
Read 2 more answers
Why is the primary structure fundamental to protein function?
dangina [55]

Answer:

amino acids

it’s shape

Explanation:

4 0
3 years ago
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