3. compare and contrast neanderthals, cro-magnon
humans, and early humans.

Cro-Magnons were straight limbed and tall  compared to Neanderthals  and early humans.

Explanation:

Neanderthals are more primitive but stronger. They were stockier, with shorter limbs and a larger chest and nose. The head is much longer with more pronounced facial front.

Cro-Magnons are robustly built and powerful. The body was generally heavy and solid, with strong musculature. The forehead was straight and face was short and wide.

Early humans were small in size. They had long arms and short legs. They required larger digestive tract because of their plant based diet.

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.

i got you i did it ya know what it is just needing to fill this in for a quick task!