Beside each interaction, write the names of the 2 spheres that are interacting A tree is blown down by the wind

A person gets caught in the rain

Hail damages a sugarcane crop

Air next to the ground becomes warm

Water vapor condenses to form a cloud

Lightning strikes a park ranger

A flash flood forms

A puddle seeps deep into the ground

Cumulonimbus cloud

A tornado destroys a zoo

the tricuspid valve is present between right atrium and right ventricle

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.