Answer:B
Explanation: Using Chemicals or pesticides would make it so that the invasive species would adapt to the new chemical, making it even harder to get rid of them. It’s helpful for the time being, however it doesn’t help for the long term. Introducing a predator, is like using 1 new species, to get rid of another new species. If you get rid of the invasive species, you still have to deal with the new predator. Hunting competitions can help, however they would only really work for animals. I don’t think hunting for plants would arouse much interest. Preventing them from invading a new environment would make it so that the damage will never be done...
Answer:
a
Explanation:
bace i have done thos test
Answer:
4 chemicals
Explanation:
There are mainly 4 steps of gram staining.
1- crystal violet stain drained on the heat fixed slide.
2- then wash the slide and use iodine.
3- then wash the slide with water and use acetone as a decolorizer.
4- then use safranine as a counter stain.
So there are a total of 4 chemicals used named crystal violet, iodine, acetone, and safranine.
The natural blind spot is due to lack of receptors where the optic nerve and blood vessels leave the eye. There can also be artificial blind spots when something blocks light from reaching the photoreceptors, or when there is local adaptation of the retina as just after seeing a bright light
Answer:
a pigment metabolite from the destruction of hemoglobin
Explanation:
Bilirubin is a yellow pigment produced during the normal breakdown of hemoglobin as red blood cells die.