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What was/were found in the early earth’s atmosphere?
Methane and Hydrogen
What is a technique used for discovering the age of fossils, involves the half-life or C-14, and can only date materials less than 60,000 years old?
Inorganic molecules were able to combine under the correct abiotic factors to form organic molecules.
primordial soup hypothesis
Some scientists theorize that certain prokaryotes developed symbiotic relationships with ancestors of eukaryotic cells. This describes the theory of ______.
basic membranes surrounding organic molecules and polymers
Some scientists believe the high energy from lightning and ___ helped organic compounds form from simple molecules.
intense UV radiation
_____ demonstrates common ancestry and has been significantly modified in different animals.
________ performs similar functions and developed in different animals under similar environmental pressures.
These biologists compare embryos
These biologists study fossils such as bones.
These biologists compare the shapes and structures of different organisms.
demonstrates convergent evolution
demonstrates divergent evolution
the stage between a gastrula and a fetus
the first cell formed when combining an egg and sperm cell
the supercontinent on early Earth, made of all of today’s continents
On early Earth, there was only one land mass, which slowly broke apart through_______ to form the seven continents we know.
What is an old theory of life creation on early earth that life can just create itself under the right conditions?
What did Pasteur prove that Redi could not?
even microorganisms cannot spontaneously generate
Scientists theorize that both ______ and ______ used to be prokaryotic cells that developed symbiotic relationships with ancestors of eukaryotic cells.
Chloroplast and Mitochondria