One of the things that controls population growth is the availability of food, the birth rate and death rate, the maximum carrying capacity of an area, and disease.
Answer:
Explanation:
"The lymphocytes and monocytes belong to the mononuclear cell group. This means their nucleus is in one piece. Lymphocytes are the main cells in the lymph nodes. There are almost as many lymphocytes as neutrophils in the blood."
Physical Property is a quality or condition of a substance that can be observed or measured without changing the substance's composition
earth is rotating clockwise. ♡
Answer:
2%
Explanation:
The scientist believe that around 2% of the species that existed on Earth have been preserved in the fossil records. It is still a hot debate about it though, as there are only around 250,000 species identified in the fossil records so far, which is less than a quarter from the species that live in the present.
The reason why scientists believe that the majority of the species have not been preserved are very logical though. One of the reasons is that lot of species existed very long time ago, so their remains just didn't lasted so long. Other reason is the movement of the plates, where we have situation where plates that existed in the past have been totally suducted and melted in the mantle, while others are at the verge of it, so every fossil with them is melted and destroyed too. Another reason is that lot of species do not have hard parts, solid bone structure, so their preservation has been pretty much impossible,
