Answer:
It is The chloroplast is where photosynthesis occurs.
Explanation:
The correct answer is biological.
When any pathogen invades the body, it has to pass several line of defence. The first barrier is skin and mucous membrane which is a physical and chemical barrier. The second line of defence is non specific response by macrophages, neutrophills and interferon. After crossing these two barriers the third line of defence comes into action in which, the B- cells and T-cells acts specifically on the pathogen and destroys it.
The body will use the biological immune responses to destroy the disease-causing bacteria which crosses the first and second lines of defense.
The immune system is the system of organs and tissues as well as cells which work together to protect the body from diseases.
The first line of defence of the immune system is the skin an mucous membranes.
The second line of defense is the macrophages.
The third line of defense is the immune cells such as B-cells and T-cells which are biological immune responses.
Therefore, the body will use the biological immune responses to destroy the disease-causing bacteria which crosses the first and second lines of defense.
Learn more about immune system at: brainly.com/question/26285919
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Answer:
Charles Darwin is centrally important in the development of scientific and humanist ideas because he first made people aware of their place in the evolutionary process when the most powerful and intelligent form of life discovered how humanity had evolved.
Answer:
charles darwin basically does wiritng as he is an author. he is bascially a theriost too since he created the "theory of evolution' so charles darwin does wirting and he also creates theorys.
hope this helped -Johnny Joestar
Explanation:
Permian Extinction: The Permian - Triassic extinction event, colloquially known as the Great Dying or the Great Permian Extinction, occurred about 252 million years ago, forming the boundary between the Permian and Triassic geological periods, as well as the Paleozoic and Mesozoic eras.
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