Yes, there is growing evidence that cognitive impairment is associated with cigarette smoking.
Answer:
the reproduce by putting the male representative organ in the female reproductive organ
Answer:
Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.
Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.
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Answer:
the food chain
Explanation:
every species in the ecosystem eats or gets eaten
