Answer:
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Answer:
The respitory system and the nervous system.
Explanation:
I'm pretty sure
Three factors that determine the reactivity of elements are the
valence electrons are the electrons in the outermost electron shell of an atom.
The number of electrons in an atom's outermost valence shell governs its
bonding behaviour. That is why in periodic table the elements were put together
according to their numbers of valence electrons.
METALS
The most reactive kind of metallic element is a metal from
Group 1 sodium or potassium.
An atom in Group 1 has only one valence electron.
NON-METALS
A nonmetal tends to attract another valence electrons to
attain a full valence shell.
The answer is Endemic Species
Endemic species refer to those that can only be found in a particular geographic location such as a specific island, habitat, or other pre identified zones. To be categorized as an endemiz species, that species must only be found in 1 specific location and nowhere else in the world
One of the example of endemic species is Comodo Dragon that can only be found in Comodo Island, Indonesia
<span>The part of the cell that is the control center and contains the chromosomes is the nucleus. The chromosomes are located inside the nucleus which exits in animal and plant cells. And very chromosome is believed to be passed to the offspring by the parents.</span>
