5. It is winter and everyone in your family has the flu virus but you. Which 10 points body systems work together to help prevent you from catching the flu?
The cardiovascular system transports the disease fighting cells around the body, the
respiratory system warms the air and weakens the flu virus.
The cardiovascular system transports the disease fighting cells around the body, the
immune system recognizes and kills the pathogen before it can make you sick.
The muscular system creates the disease fighting cells responsible for fighting off
diseases; the excretory system removes pathogens along with liquid waste before it
can make you sick.
The respiratory system warms the air and weakens the flu virus; the immune system
recognizes and kills the pathogen before it can make you sick

immune system recognizes and kills the pathogen before it can make you sick

Explanation:

the respiratory and cardiovascular system mostly just spread the disease

the muscular and excretory system have no part in fighting the disease

so the only logical answer left would be the immune system  

the answer is a) a shiprock was formed by igneous process

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.