The correct order of the structure form during the plant reproduction process is : b. embryo sac, zygote, embryo
- Embryo sac , the place inside the plant where fertilization happens
- zygote , two gametes that already fertilized
- embryo, zygote that has developed closer into another plant
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Pollution plays a huge factor. With factories in demand, more and more substances are being released into Earth's atmosphere, resulting in higher temperatures.
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An immune response is a reaction which occurs within an organism for the purpose of defending against foreign invaders. The first contact that an organism has with a particular antigen will result in the production of effector T and B cells which are activated cells that defend against the pathogen.
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