It's either 3.5 or 1.2
There would be more evidence spread out through space to be noticed by scientists and it seems like a stretch to go as far back as 4 billion years ago.
(I mean really? That much before the DINOSOURS died? I don't think so)
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Hope this helps
Miri
The answer is A: Synaptic cleft, motor end plate
Excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
<h3>What are Excitable cells?</h3>
Excitable cells are defined as those cells that are capable of generating electrical impulses when stimulated. Example of such cells include:
- muscle cells( smooth, skeletal and cardiac)
The artery is made up of higher amount of smooth muscles than the veins therefore, excitable cells like those found in muscle tissue are expected to be present in higher quantities in arteries than in veins.
Learn more about muscles here:
brainly.com/question/25778330
#SPJ1
Bohr models show the number of electrons (regular and valence) which helps determine which sort of should take place.
This is correct!!
His answer took years to develop. The theory of evolution says that all living things on Earth, including plants, animals and microbes, come from a common ancestor by slowly changing throughout the generations. Darwin suggested that the way living things changed over time is through natural selection
