I'd say option 4, because all of those are capable of changing the enviroment
Solar system
Planets orbit around the Sun.
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.
Systematics is the study of the units of biodiversity. Systematics differs from ecology in that the latter is concerned with the interactions of individuals (and therefore species) in a particular time.
