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Alzheimer's disease is a neurological disorder that primarily affects brain function.

It leading to memory loss and cognitive decline.

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Herbivores: These animals eat only plants.

The word "herbivore" comes from the Latin words "herba" (meaning plant) and "vorare" (meaning to eat).

Detritivores: These animals eat decaying organic matter.

Omnivores: These animals eat both plants and animals. 

Carnivores: These animals eat only meat. 

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The cell membrane of cardiac muscle cells maintains an electrochemical gradient of sodium (Na⁺), potassium (K⁺), and calcium (Ca²⁺) ions.

These ions are crucial for generating and transmitting electrical impulses that cause heart contractions.

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RBCs lack a nucleus to make more room for hemoglobin, which carries oxygen.

This structure helps them efficiently transport oxygen throughout the body.

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Pathogenic bacteria are harmful microorganisms that cause diseases in humans, animals, or plants.

Examples include E. coli, Salmonella, and Streptococcus.

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Children under 5 are most vulnerable to waterborne diseases due to their developing immune systems and high susceptibility to dehydration.

Poor sanitation and contaminated water sources can severely impact young children, leading to high mortality rates in this age group.

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