What are Ectoparasites?

Ectoparasites are organisms that live on the external surface of a host organism and obtain their food from the host.

Types of Ectoparasites

Fleas: Small, wingless insects that feed on the blood of their host.
Ticks: Arachnids that feed on the blood of mammals, birds, and sometimes reptiles and amphibians.
Lice: Small insects that live on the skin and feathers of birds and mammals.
Mites: Tiny arachnids that can cause skin irritation and transmit diseases.

Health Effects of Ectoparasites

Ectoparasites can cause a range of health issues for the host, including:

Skin irritation and itching
Allergic reactions to the ectoparasite's saliva
Transmission of diseases, such as Lyme disease from ticks
Anemia in severe infestations
Skin infections from scratching

Preventing Ectoparasite Infestations

Regular grooming and bathing of pets
Using insecticides and repellents
Regularly cleaning and vacuuming living areas
Checking for ticks after spending time in wooded or grassy areas

Conclusion

◂Science Worksheets and Study Guides Seventh Grade. Weathering of rocks and soil formation

Study Guide

Weathering of rocks and soil formation

Activity Lesson

Weathering of Rocks

Worksheet/Answer key

Weathering of rocks and soil formation

Worksheet/Answer key

Weathering of rocks and soil formation

Worksheet/Answer key

Weathering of rocks and soil formation

Worksheet/Answer key

Weathering of rocks and soil formation

Vocabulary/Answer key

Weathering of rocks and soil formation

Vocabulary/Answer key

Weathering of rocks and soil formation

Vocabulary/Answer key

Weathering of rocks and soil formation

Vocabulary/Answer key

Weathering of rocks and soil formation

The resources above cover the following skills:

LIFE SCIENCE

Unity and Diversity

Analyze and interpret data for patterns of change in anatomical structures of organisms using the fossil record and the chronological order of fossil appearance in rock layers.