Answer:
They consist mainly of iron-nickel metal with small amounts of sulphide and carbide minerals. During the decay of radioactive elements in the early history of the solar system, many asteroids melted and the iron they contained, being dense, sank to the centre to form a metallic core.
Explanation:
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Answer:
The pectoralis muscle moves the front limb inward and the transverse abdominal muscles moves the posterior limiting membrane up. The limbs are brought into the shell, pushing up on the lung, causing air to expel by the muscles contracting.
To Breathe air in, the serrates muscle pulls out, the abdominal oblique pulls down and the weight of the viscera allows air to flow in, via negative pressure.
Explanation:
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Clues such as fossils such as bones, footprints, tar, etc, preserved underground helped inform scientists. You can also count how old a tree is when you cut it open and there are some alive for thousands of years so that is a possible way.
Proteins have all of the properties except genetic material.
<h3>What do you mean by Proteins?</h3>
Proteins may be defined as naturally emerging, extremely complicated substances that consist of amino acid residues joined by peptide bonds.
Proteins have the following properties:
- They are enzymes.
- Work as signaling molecules in numerous signaling.
- They are involved in the transport of materials.
- They provide a structural arrangement to the cells.
Therefore, proteins have all of the properties except genetic material.
To learn more about Proteins, refer to the link:
brainly.com/question/10058019
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