Since Lithium has one valence electron that means it needs to lose it to form a stable structure. That means it's valence is equal to one. Oxygen has six atoms, in order to form a stable octet structure it needs to accept 2 electrons, therefore it's valence is 2.
Therefore two Lithium atoms bond with one oxygen atom to form Li2O
Answer: lf an organism produces many offspring, but none of them reach maturity, then it has low fitness, because its offspring will not pass on their traits to the next generation.
Answer:
Hypothesis.
Explanation:
The science mainly deals with the study of the nature and the natural phenomena. Different fields of science are chemistry, biology, physics, geology and maths.
Hypothesis may be defined as the complete explanation of the particular phenomena mainly on the observation of the individual. A scientific hypothesis can be converted into a theory if tested by the scientific experiments. Here, Edward Jenner based on his observation predicts the hypothesis about vaccination.
Thus, the correct answer is option (A).
Gamete cells contribute to offspring because through meiosis, haploid cells with half of the chromosomes are created. They increase genetic variation by combining with the cell from the other organism. This contributes to offspring because they get good traits from both parents rather than being genetically identical to just one.
Hope that helped :-)