Examlex
Zircon crystals that form in molten magma are easily dated because they initially contain ____.
Uranium Atoms
The basic units of the chemical element Uranium, known for their radioactive properties and used as fuel in nuclear power plants.
Uranium Metal
A heavy, dense metal that is radioactive and used primarily as fuel in nuclear reactors.
Protons
Positively charged particles found in the nucleus of an atom, contributing to the atom's mass and atomic number.
Isotope
Variants of a chemical element that have the same number of protons but different numbers of neutrons in their atoms, affecting their atomic mass but not their chemical properties.
Q15: Land plants most likely evolved from _.<br>A)
Q31: Which is the most recently evolved embryonic
Q35: Electrophoresis separates DNA fragments on the basis
Q45: What is the function of phloem?<br>A) It
Q49: Evidence supporting the lack of oxygen on
Q52: A walled, immature male gametophyte is called
Q57: A change in a population that is
Q58: The branch points on a cladogram represent
Q68: tRNA differs from other types of RNA
Q68: In most ferns, roots and leaves sprout