<h2>
Answer:</h2>
<u>D. All of the above
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<h2>
Explanation:</h2>
Precambrian time incorporates Earth's history from birth up to 590 million years back. That is, the Precambrian traverses 90% of Earth's presence. Fossilized microscopic organisms and blue-green growth demonstrate that crude life existed in any event 3,500 million years prior, and potentially prior.
However, it took another 2,100 million years for eukaryotic cells (plant and creature cells) to show up. These single-celled animals (protozoa) commanded the seas. Multi-cell creatures (spineless creatures) didn't advance until exceptionally late in Precambrian time, around 700 million years prior or 2,800 million years after life initially started on Earth.
Label A: Phosphate Group
Label B: Five-carbon sugar
Label C: Nitrogenous Base
I just did this and I got it correct, I hope it helps!
If pea plant cells contain 14 chromosomes, a pea plant's gamete cell contains 7 chromosomes.
<h3>Describe chromosomes.</h3>
Chromosomes are a pair of thread-like structures that are found in cells.
Re genes and a person's personality are found on the chromosomes.
Meiosis causes the daughter cells to contain half of each chromosome.
<h3>What does a chromosome do primarily?</h3>
Chromosomes' primary role is to transport DNA, which is the building block of all genetic material. DNA contains the genetic instructions for a number of cellular processes. These activities are necessary for the organisms' development, maintenance, and procreation. Chromosomes are shielded by proteins like histones.
To know more about Chromosomes visit:
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Answer:
- Physical and chemical barriers
- non-specific innate responses
- specific adaptive responses
<u>The differences are...</u>
The first barrier is the physical and chemical barrier. It is the first line of defense when in contact with outside sources, this can be through the skin, earwax, nose-hair, etc.
The second barrier, the non-specific innate response, is after these outside sources have somehow managed to pass through the first barrier. They come into contact with cells and enzymes that help to defeat them.
The third barrier, the specific adaptive response, is the body's way of dealing with pathogens that the body has encountered before. (B cells activate)
Answer:
IT SAYS DEAD RATS WHICH MAKES YOU THINK THEY ARE DEAD BECAUSE OF A MISTAKE. which is a conclusion
Explanation: