Phases or components
Your textbook describes two
sequential phases of interaction between organisms and their environments that
have existed since god's creative work began. Organisms interact with their
environments in different ways. Different organisms of a biological community cooperate
and compete for habitats and share the resources in that habitat.
Answer: Radon
Explanation: Radium is a decay product of Uranium. As Radium is still highly radioactive it further decays into Radon.
Hope I helped :)
Answer:
True
Explanation:
There are several types of cytokines used in cell signaling; interferons, interleukins, tumor necrotic factor, and chemokines. T helper cells mainly produce interleukins. When activated by Antigen-Presenting-cells, t-helper cells produce interleukins that activate B cells and is significant in their proliferation during an infection.
The answer is A, because the 'filling' is the jelly like cytoplasm and the edge is the cell wall
