kelp, a type of seaweed, is sea urchins' favorite food. sea urchins are sea otters' favorite
tood. if the population of sea ofters in an area suddenly decreased, which one of the
following best describes what would likely follow?
a. the sea urchin population would go up, reducing the amount of kelp. fish that
normally live in the kelp forests along the shore would have less food and protection
from predators, so their populations would go down as well.
b. the sea urchin population would go up, increasing the amount of kelp. fish that
normally live in the kelp forests along the shore would have more food and
protection from predators, so their populations would go up as well.
c. a sudden decrease in the number of sea otters would mean less predators, so all the
other species in the area would increase in population, improving the balance of the
ecosystem

You decide that the introduction should also discuss the extremophiles that are referred to as the archaea. these single-cell organisms are considered "extremophiles" due to their ability to survive and reproduce in environmental conditions that would be hostile for most living organisms. archaea species have been isolated from highly acidic sulfur springs, ocean floor thermal vents with temperatures that exceed boiling, and subarctic ice well below freezing. while still considered to be prokaryotic, the archaea have numerous differences that place them apart from the bacteria. choose the characteristics that separate the archaea from other prokaryotic cells. select all that apply. view available hint(s) select all that apply. archaea lack true peptidoglycan in their cell walls. the morphology of the cell is rigid and is geometric in shape, similar to a sphere or cylinder. the cytoplasmic membrane lipids of archaea have branched or ringform hydrocarbon chains. all currently identified and characterized archaea have been linked as the causative agent to an animal or human disease.

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)