Course 1, Topic 8 (Wr.)

Choose the right answer: The fastest animal is....

Choose the right answer: The biggest bird is

Choose the right answer: The strongest one is

Choose the right answer: the smallest bird is

Choose the right answer: the longest animal on the land is...

Choose the right answer: An insect with a sting and wings is...

What's wrong?

What's right?

Fill in the gap: Heavy industrial traffic and chemical plants release toxic _______ into the atmosphere, causing severe respiratory problems for local residents.

Fill in the gap: The _______ layer is a crucial region of the stratosphere that absorbs most of the sun's harmful ultraviolet (UV) radiation.

Fill in the gap: Carbon dioxide ($CO_2$) and methane ($CH_4$) are well-known _______ gases that trap heat in the Earth's atmosphere, leading to global warming.

Fill in the gap: When power stations burn fossil fuels, they release sulfur dioxide, which mixes with water droplets in the air to form _______ rain.