Any living or non-living thing that can affect the animal or plant in any way, this can include sunlight and temperature. Or other animals like Predators.
Adenine, Guanine, Cytosine, Thymine?
Prokaryotic ribosomes are smaller than eukaryotic ribosomes
Answer:
Louis Pasteur devised a way to flask that allowed oxygen in, but prevented dust from entering. The broth did not show signs of life until he broke off the neck of the flask allowing dust, and therefore microbes, to enter.
Explanation:
Hope that helps! UnU