The Doppler effect. The farther away the siren gets, the lower the pitch will get.
<span>Its b, cohesive forces attract water molecules and compel them to form droplets</span>
Answer:
Nucleus
Explanation:
Chromatids are the linearly arranged condensed structure of genetic material in the cell. The chromatids are observed after the parent cell are divided into the daughter cells.
During cell division, the cell divides, their chromosomes separate and gets accumulated at the poles of the cell. These chromatids are naked that is floating in the cytosol but the characteristics feature of the eukaryotic cell is the presence of a double membrane organelle which can protect the genetic material called the nucleus.
Thus, nuclear envelope or nucleus gets reformed around the chromatids.
Answer: D. Species
Explanation:
Species is a group of population in which organisms have many common characteristics and they are capable of interbreeding and producing viable fertile offsprings. The members belonging to the same class and phylum have less common characteristics if they interbreed they may not produce viable fertile offsprings. Also, the organisms of the same kingdom have least common characteristics and will not have viable fertile offsprings after interbreeding.
