Cells are the smallest form of life able to survive on their own.
The earliest life forms were mostly different kind of bacteria and plants and other organisms.
The simplest kind of invertebrates would be sea sponges. They are part of the phylum Porifera and are the only animals that do not have a nervous system at all.
A biologist studies all life forms.
Protective tissue
The basic structure of cell membranes is a phospholipid bilayer. Phospholipids have a phosphate group (the head) and a lipid tail.
SHUTUP
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Basalt is extruded from volcanoes and MOR (mid ocean ridges). It actually forms in the earth's mantle and just solidifies on the earth's surface.
This kind of rock is called Extrusive. I hope that helped!
sedimentary rock
Intrusive Igneous Rock.
These structures are called templates.
alkaline earth metal forms a +2 cation and halogen forms a -1 anion alkaline earth metal is a metal and halogens are non metals therefore the bond between them is ionic
Earth's geological forces are quite indifferent to humans or any other life forms.
When ice forms in cracks in rocks, the kind of weathering is known as mechanical weathering. The type of mechanical weathering that freezes and thaws is frost wedging.
These are igneous rocks.
A laccolith.