CRTICAL THINKING ASSIGNMENT-BIOLOGY BIOL 1408 1. You decide to buy a new fish fo

Question

CRTICAL THINKING ASSIGNMENT-BIOLOGY BIOL 1408 1. You decide to buy a new fish for your freshwater aquarium. When you introduce the fish into its new tank, the fish swells up and dies. You later learn that it was a fish from the ocean. Explain what phenomenon has occurred that caused the fish to die. In a controlled experiment, a scientist is studying how long it takes parachutes of different sizes to fall to the ground. What is the manipulated (independent) variable? What's the dependent variable? 2. 3. Sea water is dangerous to drink. Why?

Explanation / Answer

1.Saltwater fish is hypotonic it means saltwater fish have a low concentration of salt in their body. If we move saltwater fish into the freshwater then cells of the fish will swell up & rupture due to which fish will die due to absorption of too much water.

2. The size of the parachute is the manipulated variable. Time and the drop speed is the dependent variable

3.Sea water is dangerous to drink because it will dehydrate due to the movement of water from inside to outside the cell which will make our body to lose water more quickly and causes dehydration.

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