Answer:
D. all of these.
Explanation:
All of these are the questions that involves ethical considerations because the method used in these questions are not doing naturally. Vitro fertilization is the fusion of woman's egg with the sperm of male outside the uterus of women which is unethical. Testing of unborn children in the womb for genetic disorders and producing genetically modify plants are also unethical because it does not occur naturally. It occurs due to intervention of humans in God's creation.
a hydrophilic molecule can be dissolved in a water solution, but a(n) hydrophobic molecule does not mix with water.
Answer: C
Explanation:
Tthe nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.
Atom. Molecules are chemically bonded atoms, thus atoms are smaller than molecules.
Options are not provided in the question. The complete question is as following:
During which changes of state does the motion of the atoms decrease?
A. melting and deposition
B. freezing and condensation
C. condensation and evaporation
D. vaporization and sublimation
Answer:
B. freezing and condensation
Explanation:
Matter exist in three form - solid, liquid and gas. The intermolecular force and motion of atom are inversely proportional, which means Greater the intermolecular force of attraction, slower will be the molecular motion.
The intermolecular forces of attraction decrease from solid to gas and solid has the strongest intermolecular forces. Thus, motion of the atom decrease in freezing and condensation.
Freezing changes the state from liquid to solid and condensation changes the state from gas to liquid.
Hence, the correct option is B.
