Answer:
Explanation: Homeostasis in animal
Homeostasis is the way animals maintain a stable internal balance in their body. It allows animals to function in the changing external conditions surrounding their body. ... Osmoregulation is an example of homeostasis. It is way osmosis is controlled by salmon to maintain a water balance.
D. single- and simple multi-celled organisms
Although more complex animals like invertebrates and multi-celled organisms began to appear, it was very late compared to the original, simpler organisms for which the Precambrian time is characterized by.
I would say site because they need to know what place they are talking about.Hope this helps :)
Italy is surrounded by sea, meaning that there is always accessible trade routes through water. In earlier days, water trade routes became much more popular due to not having to travel through rough terrain. Therefore, the economy boosted as trade increased.
