Answer: The heart, blood and blood vessels work together to service the cells of the body.
Explanation: Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen.
Answer:
acid rain has a pH value of 4.0.
Explanation:
so less than 7
B) accessing food
C) obtaining oxygen
D) avoiding predators
Answer:
The answer is C
Explanation:
Because in order for it to breath well it needs to move its gills
White tip reef sharks pump water across their gills to obtain oxygen.
White tip reef sharks spend most of the day lying on the ocean floor. They pump water across their gills while remaining still, as the movement of water across their gills is necessary for obtaining oxygen. Gills in fish, including sharks, absorb oxygen from the water as it passes over them. Sharks have well-developed sense organs that aid them in locating prey, including a keen sense of smell and the ability to detect electromagnetic fields.
Electroreceptors called ampullae of Lorenzini allow sharks to detect the electromagnetic fields that are produced by all living things, including their prey. The lateral line is used to detect movement and vibration in the surrounding water, and is often considered to be functionally similar to the sense of 'hearing' in terrestrial vertebrates.
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B. From pathogens in the air.
C. From pathogens in poorly cooked food.
D. From physical contact with an infected person.
Imagine you were investigating the cause of a mysterious disease. Which of the following would not be important to determine?
A. The food that the diseased people recently ate.
B. Who the diseased people were in contact with recently.
C. Where the diseased people had recently been.
D. How wealthy the diseased people were.
Where would a disease transmitted by person-to-person contact be most likely to spread quickly?
A. In a remote region, where contact between people is rare.
B. In a rural farming community, where neighbors live miles apart.
C. In a crowded city.
D. In a medical lab, where people wear protective gear (face masks, gloves, etc.) and equipment is regularly sterilized.
What type of disease transmission is most likely represented by the graph shown below?
Graph of disease spread
A. Person to person.
B. Foodborne.
C. Airborne.
D. Foodborne and airborne.
Which of the following patterns is most likely to indicate a foodborne illness?
A. All of the victims worked in the same office.
B. All of the victims were friends.
C. All of the victims shopped at the same supermarket.
D. All of the victims had the same symptoms.
The spread of diseases is caused by pathogens.
A pathogen is an organism that is capable of causing a disease. It is not typical for a person to catch disease from pathogens in boiled water since boiling destroys pathogens.
When investigating the cause of a mysterious disease, it would not be important to determine how wealthy the diseased people were.
The place where a disease transmitted by person-to-person contact would be most likely to spread quickly is in a crowded city.
From the graph, we can see that the disease is mostly spread by person to person contact. A food borne disease is most likely to be indicated if all of the victims were friends.
Learn more about pathogens: brainly.com/question/13873423
A micromolecule is a molecule that is relatively smaller than a macro-molecule.
A micromolecule is the smaller molecule that can be chained together with other micromolecules to make a larger molecule.