16. what is the speed of a car that travels 150 km in 3 hours? speed = (distance / time) a) 50 km/hr b) 45…

16. what is the speed of a car that travels 150 km in 3 hours? speed = (distance / time) a) 50 km/hr b) 45 km/hr c) 55 km/hr d) 60 km/hr\n17. is melting ice a chemical or physical change? a) chemical change b) physical change c) both chemical and physical d) neither\n18. which type of cell has a nucleus? a) prokaryotic b) eukaryotic c) both prokaryotic and eukaryotic d) neither\n19. what happens to a food web if a top predator is removed? a) nothing changes b) population imbalances occur c) all species increase equally d) new predators appear immediately\n20. is sunlight a biotic or abiotic factor? a) biotic b) abiotic c) both biotic and abiotic d) neither

16. what is the speed of a car that travels 150 km in 3 hours? speed = (distance / time) a) 50 km/hr b) 45 km/hr c) 55 km/hr d) 60 km/hr\n17. is melting ice a chemical or physical change? a) chemical change b) physical change c) both chemical and physical d) neither\n18. which type of cell has a nucleus? a) prokaryotic b) eukaryotic c) both prokaryotic and eukaryotic d) neither\n19. what happens to a food web if a top predator is removed? a) nothing changes b) population imbalances occur c) all species increase equally d) new predators appear immediately\n20. is sunlight a biotic or abiotic factor? a) biotic b) abiotic c) both biotic and abiotic d) neither

Answer

Explanation:

Step1: Calculate speed for question 16

Speed = $\frac{Distance}{Time}=\frac{150}{3}=50$ km/hr

Step2: Determine change type for question 17

Melting ice is a physical change as no new substance is formed.

Step3: Identify cell - type for question 18

Eukaryotic cells have a nucleus.

Step4: Analyze food - web change for question 19

Removing a top predator causes population imbalances in the food web.

Step5: Classify sunlight for question 20

Sunlight is an abiotic factor as it is a non - living component.

Answer:

  1. A. 50 km/hr
  2. B. Physical change
  3. B. Eukaryotic
  4. B. Population imbalances occur
  5. B. Abiotic