These threadlike filaments are called hyphae (plural, hypha).
Answer:
A. Lesser substance in a solution
Explanation:
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Abiotic factors are things that aren't living that effect an environment, like pH (how acidic the soil is), the temperature, amount of light, and so on. These can effect a population by making it more difficult to survive, perhaps creating more competition over available resources and so on. So for example, if the soil is really acidic in an area, a population of plants may not be able to grow well in that environment.
all is correct . The role of the immune system is to protect the body from all what is strange about the the body this includes living organism or toxic chemical compounds ... In fact in all cases the different members of immune system recognize the strange thing by the spatial organization of its chemical composition . This is called antigen.
Answer:
The correct answer is A. a hypothesis that has been rigorously tested and never been disproven.
Explanation:
A hypothesis is an idea or guess or a proposed explanation of any phenomena. When the hypothesis is checked and proved by many experiments and cannot be disproven by anyone then it considered as a scientific theory.
Therefore a scientific theory is a hypothesis that has been rigorously tested by the performing different experiments and never been disproven. For example theory of evolution, natural selection which tell us about the evolution of organism on earth which is proven by Darwin. So the right answer is A.
