The first point of the theory of natural selection states that more offspring are produced than can be supported by the enviroment. which option is an example of this point?
a. a whale gives birth to both male and female offspring
b. fifty corn plants in a field are resistant to pests
c. bacteria split to produce identical offspring
d. a grasshopper lays hundreds of eggs

the wires in the toaster turning red and the toast crisping and turning brown

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .

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.