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Alex Smith

What are the fluids of transmission for HIV?

What are the fluids of transmission for HIV? HIV is transmitted between humans through the exchange of certain types of bodily fluids. Bodily fluids that can transmit HIV include blood, semen, breast milk, and vaginal fluids (1). What are the 4 body fluids where HIV can live? Which Bodily Fluids Spread HIV? Blood. Semen (including […]

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What period of the Mesozoic era did dinosaurs first appear?

What period of the Mesozoic era did dinosaurs first appear? Triassic period What dinosaurs lived in the Mesozoic Era? Ichthyosaurs (marine reptiles) swam in the seas. Ferns , Glossopteris, cycads , horsetails, and early gymnosperms (conifers) abounded during the mesozoic. More dinosaurs, including gigantic ones, roamed the earth, and pterosaurs flew. Archaeopteryx, the first primitive […]

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Do Ferns have vascular tissue?

Do Ferns have vascular tissue? Fern Reproduction. Ferns are seedless, vascular plants. They contain two types of vascular tissue that are needed to move substances throughout the plant. The first type of vascular tissue, xylem, is responsible for moving water and nutrients throughout the plant. Do Ferns have non vascular tissue? Ferns are primitive plants […]

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What are the concepts of biodiversity?

What are the concepts of biodiversity? Biodiversity is the variety of different forms of life on earth, including the different plants, animals, micro-organisms, the genes they contain and the ecosystem they form. It refers to genetic variation, ecosystem variation, species variation (number of species) within an area, biome or planet. How are species related? Are […]

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Why is malnutrition a problem?

Why is malnutrition a problem? Malnutrition refers to getting too little or too much of certain nutrients. It can lead to serious health issues, including stunted growth, eye problems, diabetes and heart disease. Malnutrition affects billions of people worldwide. How does malnutrition affect a child? Chronic malnutrition or stunting—when children are too short for their […]

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What is the meaning of the term drug abuse?

What is the meaning of the term drug abuse? The use of illegal drugs or the use of prescription or over-the-counter drugs for purposes other than those for which they are meant to be used, or in excessive amounts. Drug abuse may lead to social, physical, emotional, and job-related problems. What is the meaning of […]

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