Answer:
D
Explanation:
The only way for giraffes to evolve over time towards having long necks would be to have genetic differences that were gradually favored over time. As in, the giraffes that were genetically disposed to have necks just a bit longer eventually survived longer, because they could eat high leaves, while those with short necks died, and the long-necked giraffes reproduced more, which increased the allele frequencies of long necks in the species over time.
Never, never say A or B!! This is known as Lamarck's theory of inheritance of acquired characteristics, and it's simply wrong.
C is wrong, because the mutation must occur in the original zygote.
This would be a crowbar. If you have trouble understand this, just visualize what happens when you pry the lid of a box open with a crowbar. You push one end down, and the other end goes up.
The answer is false , because Relative age examines the position of rocks in a sequence.
Hope this helps .
Answer:
See the answer below
Explanation:
Ethane will burn in oxygen to form carbon dioxide and water according to the following balanced equation:
<em>From the equation, it means that for every one mole of ethane, three and a half moles of oxygen gas are required for complete combustion into carbon dioxide and water. Two and three moles of carbon dioxide and water would be produced respectively for every one mole of ethane that burns in three and a half moles of oxygen gas. </em>
Answer:
D. D. Ability to live with little water
Explanation:
The question asks which adaption would be most helpful to animals in a desert. In the desert, there is less water as it is so hot, so the ability to live with little water would be the best choice!