Match the events leading up to the formation of the early Earth in order.
A) Formation of proto-planets.
B) Formation of solar nebula.
C) Contraction of interstellar materials.
D) Nuclear fission lights up Sun.
1) First
2) Second
3) Third
4) Fourth
Question 2
The strong promotion by the Chinese government of villagers to move to cities has produced
A) slowing of urban industrial growth.
B) families with increasing numbers of children.
C) loss of rural traditions and lifestyles.
D) stronger family structures.
The steps in eukaryotic chromosomal compaction leading to the metaphase chromosome
Relatively simple changes in Hox genes control limb formation in tetrapods.
Formation of the disaccharides lactose and sucrose
Tornado Formation: Supercell Tornado Development
Views of Earth’s Layered Structure
Test of Yanofsky’s Proposed trp Operon Gene Order