Why is it relatively rare to observe a solar eclipse

There are about 50 to 100 elements on the periodic table.

Hope this helps.

Please give me brainliest.

Humans and apes likely have the most similar chromosomes.

Humans and apes chromosomes:

In other words, the DNA sequences of humans and chimps are 98 percent identical.

While the genetic similarities between humans and apes bolstered Darwin's theory, there remained a huge, unexplained gap. Humans only have 46 chromosomes (24 pairs), but big apes all have 48. (23 pairs).

Find our more information about 'Chromosomes'.

brainly.com/question/296477?referrer=searchResults

Answer:

C. Humans and Apes

Explanation:

It is said that we share 99% of our DNA with apes

Answer:

Explanation:

• Metals are usually good conductors of heat and electricity as they have free valence electrons.
• They are usually found in a solid state or room temperature except mercury, gallium and cesium.
• They have high specific gravity ( relative density )
• They have high melting and boiling points except mercury, sodium and potassium.
• They are usually malleable and ductile in nature.
• They have metallic luster.
• They are usually hard in nature except Group IA metals like lithium , sodium and potassium.

Hope I helped!

Best regards! :D

Explanation:

They are electropositive in nature,they are generally malleable and ductile,they are sonorus,i.e.,they produce sounds on striking their surface,they have high density,they have high tensile strength,they have shining surface Hope u understood

The Option B is correct.

When ozone near the ground mixes with other polluting gases, then air pollution results in smog.

Smog:

smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide. In the 1950s a new type of smog, known as Photochemical Smog, was first described.

The Variola vaccine (which was also the first vaccine made in the world) came from studies carried out by the English physician Edward Jenner. He observed people who became infected by milking cows with a disease of cattle and came to the conclusion that these people were immune to smallpox. The disease, called cowpox, resembled human smallpox by the formation of pustules (lesions with pus).

In view of this observation, in 1796, Jenner inoculated the pus present in a lesion of a milker named Sarah Nelmes, who had the disease (cowpox), in an eight-year-old boy named James Phipps. Phipps acquired the infection mildly and, after ten days, was cured. Later, Jenner inoculated Phipps pus from a person with chickenpox, and the boy suffered nothing. There, the smallpox vaccine was born.

The doctor continued his experiment, repeating the process in more people. In 1798, he reported his discovery in a paper entitled "An Survey on the Causes and Effects of Smallpox Vaccine". Despite facing resistance, in a short time, his discovery was recognized and spread throughout the world. In 1799, the first vaccine institute was created in London and, in 1800, the British Navy began to adopt vaccination.

Answer:

the person above is right!

Explanation: