Examlex
Write the number in the statement in scientific notation:
The mass of a proton is kg.
Spiral Cleavage
A type of early embryonic development found in some invertebrates, where cells divide at oblique angles to each other.
Deuterostomes
Deuterostomes are a major group of animals characterized by their embryonic development; in deuterostomes, the anus forms before the mouth during early embryogenesis.
Protostomes
A group in the animal kingdom distinguished by their embryonic development; during gastrulation, the first opening (the blastopore) becomes the mouth.
Developmental Level
A measure of the physical, emotional, cognitive, and social growth that children achieve through the natural maturation process and learning.
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