Answer:
A. Asteroids
Explanation:
They are asteroids.
Here you find pictures of these amazing asteroids. From left to right you will find Ceres, Ida and Gaspra.
Viruses lack the properties of living things:
1. They have no energy metabolism
2. They do not grow
3. They do not respond to stimuli
4. They do not reproduce independently- they have to replicate by invading living cells.
PCR allows for the analysis of DNA fragments through the comparison of the base pairs each molecule contains, which can then be used for genetic screening and the identification of individuals and DNA fragments
The best answer to the question above would be letter d. The sentence presented which is 'Researchers helped further the biological perspective when they demonstrated that electrical stimulation of the brain could evoke emotional responses in animals.' demonstrates how new discoveries can influence perspectives.
