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3 years ago

How have new technologies helped scientists determine the age of Earth?

2 answers:

german3 years ago

7 0

Generally speaking, scientists have developed four different methods of determining the age of the earth. By using these methods, or a combination of them, the age of geological formations created by past events and even the fossilized bones of prehistoric animals can be determined.

katrin2010 [14]3 years ago

5 0

Answer:

New technologies allow scientists to perform calculations that are increasingly more accurate and correct in relation to the age of the earth.

Explanation:

According to most scientists who study the Earth's geological past, our planet is approximately 4.5 billion years old. However, this is not a totally accurate measurement, as the margin of error for this dating is estimated at 10%. Several times before, the age of the Earth was recalculated as new evidence was found and techniques improved. What was seen is that, with each measurement made, the Earth was older than imagined.

The advancement of technology, allows this margin of error to become smaller and smaller, because it allows scientists to calculate the age of the earth with precision more and more and closer to the correct one.

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1. Explain how parents and offsprings can become different from eachother.

Fudgin [204]

Answer:

In asexual reproduction all the genes in the offspring come from one parent. In sexual reproduction one full set of the genes come from each parent. Living things produce offspring of the same species, but in many cases offspring are not identical with each other or with their parents.

Explanation:

5 0

2 years ago

What is a substance that can be formed through the ionic bonding of an anion and a cation?

bagirrra123 [75]

A chemical substance that can be formed from the ionic bonding of an anion and a cation would be Al2O3.

7 0

3 years ago

Read 2 more answers

A medical test indicates that a patient has a defective protein. This

OleMash [197]

Answer:

number of nitrogen bases

Explanation:

The correct answer would be the number of nitrogen bases.

A defective protein is usually caused by mutation, which is defined a change in the DNA sequence of an organism.

Mutation can occur in a variety of ways including:

1. Deletion of nucleotide base sequence in the DNA

2. Addition (insertion) of nucleotide base sequence in the DNA

3. Duplication of nucleotide sequence in the DNA

A change in number of phosphate molecules, sequence of subunits DNA and sequence of sugar molecules if possible in nature, do not lead to mutation if the change does not affect the sequence of DNA.

Hence, the correct option is number of nitrogen bases.

6 0

3 years ago

Which questions regarding gross motor skills should the nurse include when conducting the interview portion of the developmental

sdas [7]

The nurse should ask during the interview portion of the developmental assessment with the parent of an infant between 10 and 12 are; First Does your baby stand independently? Second "Is your baby able to walk with assistance?” and "Does your baby sit from a standing position?"

8 0

3 years ago

How do plants grow without sunlight

Black_prince [1.1K]

Answer: by using artificial light (grow light) in place of sunlight

Explanation: Plants generally needs sunlight to grow and survive through a process known as photosynthesis, this is when Plants and other organism uses sunlight to convert water, carbon dioxide and minerals into energy rich compound (starch) while oxygen is been released into the environment.

However in the absence of sunlight, artificial light know as grow light can be used, these lights are design in such a way that it emits lights of wavelengths that are appropriate for photosynthesis. The grow light replaces the sun as a source of photons in the process of photosynthesis.

3 0

2 years ago