In an early experiment with plants, Jan Baptista van Helmont showed that plants did NOT make their bodies from ...*
A) water
B)air
C)soil
mushrooms
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Match the types of competition to their descriptions

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.