Answer:
The correct answer is biological.
Explanation:
When any pathogen invades the body, it has to pass several lines of defence. The first barrier is the skin and mucous membrane which is a physical and chemical barrier. The second line of defence is the non-specific response by macrophages, neutrophils and interferon. After crossing these two barriers the third line of defence comes into action in which, the B- cells and T-cells act specifically on the pathogen and destroy it.
Stop using plastic straws, use paper bags, and stop using plastic water bottles
By exposure to the mucous membranes of the infected person. I think.
Sexual reproduction is a type of reproduction in which cells from two parents unite to form the first cell of a new organism. Advantages: genetic diversity, if an environment changes, some offspring may have the right combination of characteristics needed to survive.
Asexual Reproduction is the production of genetically identical offspring from a single parent. Advantages: grows pretty fast, better chance of survival over other organisms using the same resources. Hope I'm the brainliest!
The primary function of the Calvin cycle is to change carbon dioxide into usable energy known as glucose. So Option A.
Brainsliest would be appreciated.