Answer:
Stars are classified by their spectra (the elements that they absorb) and their temperature. There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M.
Explanation:
O and B stars are uncommon but very bright. M stars are more common but dim.
Cells will usually divide if they receive the proper signal at a checkpoint in the G1 phase of the cell cycle. In mammalian cells , this checkpoint is called the restriction point. The G1 phase is a phase of the cell cycle that takes place in eukaryotic cell division. In this phase the cell synthesizes mRNA and proteins in preparation for the subsequent steps leading to mitosis. It ends when the cell moves into the S phase of interphase.
Navel is not an example of organ
Answer: conocimiento
Explanation: Primer conocimiento de una cosa por medio de las impresiones que comunican los sentidos.
Answer:
Older rock layers are found under younger rock layers
Explanation:
It directly states in the sentence above the diagram that the bottom layer of rock is the oldest.
