Answer:the last one
Explanation: red blood cells are round in order to move easily through blood vessels.
Assuming that you're referring to forest ecosystem, the two ecological benefits of this ecosystem are :
- it provides habitats for many organisms
- It provide Oxygen supply for the world
That thing would need to rely on some source of food to live. Plants are living and they rely on sun and water. Humans rely on calories.
The remains are called fossils. Fossils are remnants of animals, plants, or microorganisms that have been solidified in the process of fossilization, where the organism is surrounded by sediment, minerals, and other solid objects which are compressed and heated around the organism over time. This forms a solid mass with the preserved organism inside, other known as a fossil.
Just like other cells, the part of the bacterium that is able to interact with its outside environment is its cell membrane. Generally, the main function of the cell membrane is for barrier and protection. This decides which molecules will be allowed to permeate or not. Hope this helps.
