Calcium is one of the most important minerals for the human body. It helps form and maintain healthy teeth and bones.
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Function
-Building strong bones and teeth.
-Clotting blood.
-Sending and receiving nerve signals.
-Squeezing and relaxing muscles.
-Releasing hormones and other chemicals.
-Keeping a normal heartbeat.
A Non-metal and a Metal react together to form an ionic bond
metals lose electrons to match the numbers of their nearest noble gas
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
Answer:
Small cells have a smaller surface to volume ratio than longer
Answer:
The phylogenetic tree can be shown in the attachment.
Explanation:
A phylogenetic tree can be described as a diagram which depicts evolutionary histories among organisms of different species. The organisms which are more closely related are more closer to one another in a phylogenetic tree.
Human, chip, gorilla, orangutan all are greater apes whose complete DNA have been sequenced. The sequencing of their genomes showed that humans have the closest relationship with chimpanzees. Hence, scientists believe that humans might have evolved from the chimpanzees.