Background extinction refers to the normal extinction rate. These are species that go extinct simply because not all life can be sustained on Earth and some species simply cannot survive. Mass extinction is a widespread event that wipes out the majority (over 50%) of living plants and animals.
THE DOG HAS 2 BROTHER is the example of discrete data.
The dog has 2 brothers.
<u>Explanation:</u>
Discrete data is the information that can be categorized into a classification. Discrete data is based on counts. only a few finite number of value is possible.
It consists of whole number that are counted rather than measured. It can be classified into two type, one is discrete and other is continuous data, where the discrete is countable of the object and the continuous is measurable one.
The dog has two brother is the example for discrete data because the number can be countable, remaining statement are continuous because they are measurable statement, it is always comes under the data continuous.
Answer:
Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears.
Explanation:
The duplicated homologous chromosomes pair, and crossing-over (the physical exchange of chromosome parts) occurs.
Answer:
B. Protein is composed of DNA which is produced in the cell
Explanation:
