True, Chordates are animals in Phylum Chordata.Chordates include all of the vertebrates, in which the notochord develops into a backbone, as well as some invertebrates. Invertebrate chordates include tunicates and lancelets.
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B. Urban communities tend to have a higher population than rural communities.
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I just took the test on ed.
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- Vitamin A (fat absorption/liver disorder): Dry skin (i.e. eczema)
- Vitamine B1 (thiamine deficiency): Beriberi (wet or dry)..wet affect heart/circulatory system, dry can cause heart failure
- Vitamin C (ascorbic acid): anemia, gum disease, skin problems, and scurvy
- Vitamin D (calcium): bone loss/density; i.e. Rickets where bones become soft and bendable
Mineral dificiency (when your body does not absord or obtain the required amount of intake)
- Iron (important for hemoglobin); low iron can cause anemia (causes you to feel weak or tired)
- calcium (important for strong bones/teeth, supports proper function for blood vessels, muscles, nerves, and hormones); Calcium deficiency disease is osteopenia (left untreated it leads to osteoporosis--usually in older adults)
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