Answer:
Explanation:
Answer 1 will be vestigial and answer 2 will be dolphins evolved from organisms with legs. Vestigial organs are those which are not in use but were once used by our ancestors for example an appendix
<span>False. In order to create a control group one must understand the baseline of what is happening. Therefore placebos are given in order to establish this control group. These control groups allow understanding of what an the actual experimental drug, in the case of clinical trials, can do.</span>
Tropical rain forest
Tropical dry forest
Tropical dry forest / savannah
Desert
Temperate grassland
Temperate woodland
Temperate deciduous forest
Northwest coniferous forest
Boreal forest
Tundra
Answer:
The correct answer is the first option which represent the structure of a nucleotide.
Explanation:
DNA double is formed by the attachment of deoxy ribonucleotides joined to one another by phosphodiester bond during the course of DNA replication.
DNA is a nucleic acid.As a result it is a macromolecule.The macromolecular structure of DNA consist of numerous deoxy ribonucleotides.