Which of the following best compares conifers and cycads? They both produce seeds, but conifers are vascular and cycads are nonvascular. They are both angiosperms, but conifers produce cones and cycads produce flowers and fruit. They are both vascular plants, but conifers are gymnosperms and cycads are angiosperms. They are both gymnosperms, but conifers have needle-like leaves and cycads have palm-like leaves.\

i used to be very good at bioligy i passed the whole class and star with a 100 so i  think It's D

Explanation:

D

Explanation:

100% sure

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.