A. Phenotype.
Genotype is the genetic constitution of an individual organism, genetic makeup is part of the DNA sequence, and personality is the way a person acts.
Answer:
Since sea urchins are picky, they are used as indicator organisms in public aquariums to determine if the system is functioning properly. This is because they are very "picky" about water quality. If the water is contaminated, the sea urchins will be the first to show signs of stress, spines laying down or falling off. Do use an aquarium filter and do clean up the day after feeding. Any metal exposed to the seawater will corrode and poison the tank. A dying sea urchin will often spawn out and rot out, causing the others in the tank to spawn and die as welll.
Explanation:
Answer:
First, the last picture
second, the third picture
third, the second or first (the picture is blurr so i dunno)
then the last is, the fourth.
sorry if wrong.
Answer:
tube 3
Explanation:
because it contains pure water
Answer:
C. four single covalent bonds
Explanation:
Carbon atoms can form four single covalent bonds.
