Answer: C) It means natural environments that refers to something found in nature or in its natural state.
Explanation for this question is being written.
Answer: C) It's pouring with rain.
Answer: D) Trickle
Answer: A) It released substances that stunned fish.
Answer: B) When someone is envious of others' situations without considering the potential drawbacks.
Answer: A) Trivial/nothing to worry about.
Answer: A) In tune with.
Answer: B) To use the toilet.
Answer: B) Bend
Answer: A) As quick as lightning.
Answer: B) Rarely
Answer: A) A problem seems little but it became dangerous later.
Answer: C) The hills.
Answer: A) Idiomatic Expression.
Answer: C) Sun sets.
Answer: D) To disappear quickly.
Answer: B) Hilltop
Answer: B) Midnight sun.
Answer: A) To flourish and come to life.
Answer: A) A better life.
Answer: B) Come rain or shine.
Answer: C) Rain
Answer: C) Swampy pine areas.
Answer: D) Snowdrift
Answer: A) The calm before the storm.
Answer: A) To sow seeds.
Answer: C) <variant>a complex web.
Answer: A) Bridge
Answer: B) It's raining cats and dogs.
Answer: A) Orchestra
Answer: C) Spring
Answer: B) Rain cats and dogs.
Answer: A) Nurseries
Answer: C) Freeze
Answer: B) To struggle against prevailing opinion.
Answer: D) Strong rain.
Answer: B) Spend time in a natural setting.
Answer: B) Fresh
Answer: B) Made-up
Answer: A) To be perplexed.
Answer: A) True
Answer: B) To live off the very best of the land that you own.
Answer: C) Huge mountains of clouds.
Answer: B) Teapot
Answer: A) Dust Bowl.
Answer: A) Hail
Answer: D) It's raining very heavily.
Answer: C) My cat is really fast.
Answer: C) Witches' knickers.
Answer: B) To become very popular or known very fast.
Answer: B) The cities were covered with ash.
Answer: B) Rain or shine.
Answer: C) As cool as a cucumber.
Answer: B) It's bucketing down.
Answer: B) A large, complex network of.
Answer: B) A very small amount compared to what is needed.
Answer: C) Heatwave
Answer: A) Thin
Answer: A) The deepest parts of the ocean.
Answer: A) Lighting