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question		réponse
Preserved remains of once-living organisms commencer à apprendre		fossils
A sticky layer that surrounds the cell walls of some bacteria, protecting the cell surface and sometimes helping to glue the cell to surfaces. commencer à apprendre		capsule
To save; to keep from harm; to protect commencer à apprendre		preserve
a very small amount commencer à apprendre		trace
a mark of a foot or shoe on a surface commencer à apprendre		footprint
to put into the ground and cover with earth commencer à apprendre		bury
more than two but not many commencer à apprendre		several
generally commencer à apprendre		commonly
small, solid pieces of material that come from rocks or living things commencer à apprendre		sediment
A mixture of rich soil and tiny rocks commencer à apprendre		silt
A wetland ecosystem in which shrubs and trees grow commencer à apprendre		swamp
a hole in the ground made by an animal for shelter commencer à apprendre		burrow
A type of fossil formed when a shell or other hard part of an organism dissolves, leaving an empty space in the shape of the part. commencer à apprendre		mold
a solid copy of the shape of an organism commencer à apprendre		cast
containing nothing commencer à apprendre		empty
The physical gap or interval between two objects commencer à apprendre		space
fading away of memory over time commencer à apprendre		decay
to become or make something become firm, stiff, or solid commencer à apprendre		harden
A scientist who studies fossils commencer à apprendre		paleontologist
a living being, especially an animal commencer à apprendre		creature
go aimlessly; wander commencer à apprendre		roam
having no doubt; sure commencer à apprendre		certain
to look at something carefully by attention to its parts commencer à apprendre		analyze
to develop gradually commencer à apprendre		evolve
a series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body commencer à apprendre		CT scan
very old commencer à apprendre		ancient
also, in addition commencer à apprendre		additionally
extremely important commencer à apprendre		crucial
technique of joining two pieces of fabric edge to edge commencer à apprendre		piecing
the study of geographic phenomena by visiting places and observing how people interact with and thereby change those places commencer à apprendre		fieldwork
Marked by richness of growth, especially of vegetation. commencer à apprendre		lush
before written history commencer à apprendre		prehistoric
prosper; flourish commencer à apprendre		thrive
very large commencer à apprendre		vast
proof commencer à apprendre		evidence
Parts of something that are left after the rest is gone. commencer à apprendre		remains
To keep something safe and stop it from being destroyed. commencer à apprendre		preserve
A group of animals or plants of the same kind. commencer à apprendre		species
No longer living anywhere in the world. commencer à apprendre		extinct
To slowly become a fossil over a very long time. commencer à apprendre		fossilize
A small sign that something was there in the past. commencer à apprendre		trace
To slowly break down or rot after death. commencer à apprendre		decay
An animal that eats animals that are already dead. commencer à apprendre		scavenger
Full of healthy, green plants. commencer à apprendre		lush
From a time before people started writing history. commencer à apprendre		prehistoric
The slow way living things change over many generations. commencer à apprendre		evolution
An animal that hunts and eats other animals. commencer à apprendre		predator
Information or signs that show something is true. commencer à apprendre		evidence
The complete disappearance of a species from Earth. commencer à apprendre		extinction

Unit 1 English ENG

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