Understanding Soil Texture and Structure
Soil Structure Sand, silt, clay, and organic-matter particles in a soil combine with one another to form larger particles of various shapes and sizes. These larger particles, or clusters, are often referred to as aggregates. The arrangement of the soil particles into aggregates of various sizes and shapes is soil structure.
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Explaining a Soil Profile
www.senecahs.orgA soil profile is usually studied to a depth of 3 to 5 feet. To see the soil profile, soil cores may be taken or holes dug to expose the pro-file.
Understanding Soil Texture and Structure
www.senecahs.orgSilt is the mid-size soil particle. Silt has good water-holding ability and good fertility char-acteristics. It feels like flour when dry and smooth like velvet when moist.
Plant Classification - Seneca High School
www.senecahs.orgCultivar Cultivars have distinguishing characteristics from the other plants in the species, but cultivars do not transfer those characteristics to offspring
Understanding Leaf Anatomy and Morphology
www.senecahs.orgare responsible for most of the photosynthesis in the leaf and are called the palisade mesophyll. Located under the palisade mesophyll are loosely packed cells called the spongy mesophyll.
STHS Random Drug Testing Program Frequently Asked …
www.senecahs.orgFrequently Asked Questions Q: Why is this drug testing policy being put into place? A: Participation in extracurricular activities is a privilege, and participants need to be exemplars. The District also wants to foster health, safety, and the welfare of its students.
Plant Classification - Seneca High School
www.senecahs.orgPlant Divisions Tracheophyta or Spermophyta – Seed Producing plants that bear flowers – Pterodophyta - a class of Tracheophyta that does not produce seeds (Ferns, reproducing with spores) Thallophyta – Fungi and bacteria
Explaining a Soil Profile - senecahs.org
www.senecahs.orgA soil profile is a vertical cross section of the soil. The differences are developed from the interaction of such soil-forming factors as parent material, slope, native vegetation, weathering, and climate. As a soil ages, horizontal layers develop and changes result. The causes of these
Understanding Horticulture
www.senecahs.orgapples, and pears. Small fruits include strawberries, raspberries, and blueberries. Almonds, pecans, and walnuts are popular nut crops. OLERICULTURE The area of horticulture that involves the production of vegetable food crops is olericulture. Olericulture includes the planting, harvesting, storing, processing, and marketing of vegeta-ble crops.
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www.senecahs.orgCurriculum Guide: SPANISH I Course of Study : Spanish Core Standard: Connections And Communities Level: 1 Standards for 21st Century Enduring Understandings Essential Questions 3.1 3.2 5.1, 5.2 ISBE 30A and 30B The study of language applies to many different content areas. In what ways are the other subject areas in the curriculum affected by
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www.senecahs.orgAxillary bud Stipule Stem Petiole Blade FIGURE 1. The major parts of a leaf. Dicots have leaves with veins that connect and branch from each other. Veins in a branch-ing pattern are called netted veins. A leaf with netted veins sometimes has several smaller
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