1. What will happen if there are more predators then preys in an ecosystem
A. The source of food will increase.
B. The source of food will decrease.
C. The source of food will remain the same.
D. Other animals will also decrease in number.
2. Which of the following is the natural control of rat population in the rice field?
A. dogs
B. snakes
C. cats D. farmers
3. What will happen to the population of grasses when horses and carabaos
compete for food?
A. The carabaos and cows will die.
B. The population of grasses will be decreased.
C. The cows will eat more grasses than the carabaos.
D. The carabaos will be affected when there will be no grasses
4. There are few fishes being caught by fishermen nowadays. Which is the reason
for this?
A. There are more fishermen catching fish.
B. Fishes go farther into the ocean.
C. Fishes practiced family planning.
D. Fishermen are already rich​