What three problems had to be solved before plants could be well adapted to life on land ? What was the evolutionary solution to each of these problems?

Explanation:

Avoiding dehydration. Plants on land would have developed roots to acquire water from the soil. They also developed stomata ( by difinition: Stomata permit the absorption of carbon dioxide necessary for photosynthesis from the air, as well as the removal of excess oxygen) on the underside of their leaves to reduce water loss. Adaptation to arid environments involved waxy coats and fleshy leaves for water storage.*biology

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

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.