Answer:
B. Their cells have a nucleus.
Explanation:
Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled.
Answer:
The correct answer would be -
1. the ocean have
2. water
3. acidic.
Explanation:
Carbon dioxide fro the atmosphere dissolves in the seawater naturally. This process can be understood by the following process:
Water and carbon dioxide reacts to form carbonic acid that can dissociate into either carbonate ion or bicarbonate ion:
1. CO2 + H2O ====> H2CO3⁻ (carbonic acid)
2. H2CO3⁻ ======> H⁺ + HCO3⁻ (bicarbonate ion)
3. H2CO3⁻ ======> 2H⁺ + CO3⁻ (carbonate ion)
Due to the presence of proton ions in seawater, seawater becomes more acidic. As hydrogen ions bind to the carbonate ions to make bicarbonate ions, the carbonate ion reduced which is required to form the
1. Jesi is on vacation and visited a seafood restaurant to eat a shrimp dinner. About thirty minutes after eating, she begins to feel ill and her stomach is rumbling. Shortly after, she begins to vomit. Jesi's body is experiencing a reaction to an ________ stimulus.
internal response
2. During a stressful or threatening situation, which of the following is the best description of how the nervous systems in your body would respond?
The parasympathetic nervous system senses the danger and the sympathetic nervous system responds by releasing adrenaline.
3. Which of the following scenarios is the best example of positive feedback?
As blood pressure decreases, your heart rate increases.
