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... ex/m2 in the rich chernozems in the North of Moldova, and 42-64 ex/m2 in the South; where the soils are, generally, less fertile. The same tendency has been recorded for fungi (53,000-68,000 and 15,000-22,000 per one gram of soil, respectively). During the last decades, the anthropic activity result ...
... ex/m2 in the rich chernozems in the North of Moldova, and 42-64 ex/m2 in the South; where the soils are, generally, less fertile. The same tendency has been recorded for fungi (53,000-68,000 and 15,000-22,000 per one gram of soil, respectively). During the last decades, the anthropic activity result ...
ZOOLOGY - Benchmark 2 Study Guide 1. Approximately what
... 4. __________ are in the phylum Porifera. There are about _____ different species & most of these are _________ organisms found in oceans & seas. A few sponges are found in __________, but these are small and not brightly colored. 5. Sponges are _____________ that trap __________ from water as it fl ...
... 4. __________ are in the phylum Porifera. There are about _____ different species & most of these are _________ organisms found in oceans & seas. A few sponges are found in __________, but these are small and not brightly colored. 5. Sponges are _____________ that trap __________ from water as it fl ...
Soil Conservation
... • Describe three important benefits that soil provides. • Describe four methods of preventing soil damage and loss. ...
... • Describe three important benefits that soil provides. • Describe four methods of preventing soil damage and loss. ...
IYS brochure en WEB
... Our soils are in danger because of expanding cities, deforestation, unsustainable land use and management practices, pollution, overgrazing and climate change. The current rate of soil degradation threatens the capacity to meet the needs of future ...
... Our soils are in danger because of expanding cities, deforestation, unsustainable land use and management practices, pollution, overgrazing and climate change. The current rate of soil degradation threatens the capacity to meet the needs of future ...
Chapter 29
... B. Most polychaetes are marine worms with parapodia 1. Members of class Polychaeta are marine worms that burrow in soft substrate or live in tubes 2. The fleshy parapodia with many setae function in locomotion and respiration 3. Polychaetes produce trochophore larvae 4. The synchronous reproduction ...
... B. Most polychaetes are marine worms with parapodia 1. Members of class Polychaeta are marine worms that burrow in soft substrate or live in tubes 2. The fleshy parapodia with many setae function in locomotion and respiration 3. Polychaetes produce trochophore larvae 4. The synchronous reproduction ...
PIGEON DISSECTION
... CECUM“J” Pouch at junction of small and large intestine Contain bacteria to digest plant material ...
... CECUM“J” Pouch at junction of small and large intestine Contain bacteria to digest plant material ...
Climate/Soil
... - soil types of different biomes differ - filtration rates, rate of water flow through the soil, of the different soils can be studied ...
... - soil types of different biomes differ - filtration rates, rate of water flow through the soil, of the different soils can be studied ...
Biology Chapter 38 notes Section 38
... In response to the hormone the cells of the epidermis secrete enzymes that digest the inner layer of the exoskeleton. At the same time the epidermis begins to make a new exoskeleton. Eventually the outer layer of the old exoskeleton loosens, breaks along specific lines. It takes a few days for the n ...
... In response to the hormone the cells of the epidermis secrete enzymes that digest the inner layer of the exoskeleton. At the same time the epidermis begins to make a new exoskeleton. Eventually the outer layer of the old exoskeleton loosens, breaks along specific lines. It takes a few days for the n ...
Types of Soil
... Subsoil does not have a lot of humus, but it does have small rocks in it. Subsoil particles are larger and lighter in color than topsoil particles. ...
... Subsoil does not have a lot of humus, but it does have small rocks in it. Subsoil particles are larger and lighter in color than topsoil particles. ...
Acidification - a major form of land degradation
... Degradation of agricultural soils in many parts of the world is related to several processes including water and wind erosion, waterlogging, salinisation and acidification. Soil pH decline in agricultural systems can be attributed to the use of intensive farming practices. Farming practices such as ...
... Degradation of agricultural soils in many parts of the world is related to several processes including water and wind erosion, waterlogging, salinisation and acidification. Soil pH decline in agricultural systems can be attributed to the use of intensive farming practices. Farming practices such as ...
Study Guide - Springfield Elementary School
... 4. __humus___ is bits of decayed plants and animals that add nutrients to the soil. 5. The layer of soil with solid rock is called _____bedrock___. 6. __ subsoil____ is the layer of soil that has a lighter color and less humus than the layer above it. 7. The top layer of soil is called ____ topsoil_ ...
... 4. __humus___ is bits of decayed plants and animals that add nutrients to the soil. 5. The layer of soil with solid rock is called _____bedrock___. 6. __ subsoil____ is the layer of soil that has a lighter color and less humus than the layer above it. 7. The top layer of soil is called ____ topsoil_ ...
Flatworms are placed in 3 classes
... lamina to support the wall. This makes the wall more flexible than a body wall surrounded by a cuticle. ...
... lamina to support the wall. This makes the wall more flexible than a body wall surrounded by a cuticle. ...
PART II - kenpitts.net
... law of energy to food chains and pyramids of energy, which describe energy flow in ecosystems. Explain how there may be exceptions to pyramids of numbers and biomass, but not energy. 11. Evaluate which ecosystems show the highest average net primary productivity and which contribute most to global n ...
... law of energy to food chains and pyramids of energy, which describe energy flow in ecosystems. Explain how there may be exceptions to pyramids of numbers and biomass, but not energy. 11. Evaluate which ecosystems show the highest average net primary productivity and which contribute most to global n ...
1. Why do plants and soil need each other? 2.
... 1. Why do plants and soil need each other? 2. What is just right soil? Why does it matter? 3. What is bedrock? How does this contribute to soil formation? 4. All the layers of the soil together are called what? 5. Why are we not covered in layers of dead leaves? 6. What life helps make or maintain s ...
... 1. Why do plants and soil need each other? 2. What is just right soil? Why does it matter? 3. What is bedrock? How does this contribute to soil formation? 4. All the layers of the soil together are called what? 5. Why are we not covered in layers of dead leaves? 6. What life helps make or maintain s ...
Flatworms - atlundkvist
... 14. They can get rid of __carbon dioxide__ and most other _metabolic__ wastes by allowing them to _diffuse_ out through their body walls. 15. Freshwater flatworms such as _planarians_ have structures called _flame cells__that help them get rid of extra _water_. 16. Free living flatworms have _nervou ...
... 14. They can get rid of __carbon dioxide__ and most other _metabolic__ wastes by allowing them to _diffuse_ out through their body walls. 15. Freshwater flatworms such as _planarians_ have structures called _flame cells__that help them get rid of extra _water_. 16. Free living flatworms have _nervou ...
Name that Body System
... food and oxygen, to cells. I also pick up wastes, such as carbon dioxide, from these cells and deliver them to the lungs. ...
... food and oxygen, to cells. I also pick up wastes, such as carbon dioxide, from these cells and deliver them to the lungs. ...
POSITION PAPER
... fertility is the basis of agricultural production and, therefore, of human nutrition. In Europe, an area of nearly 200,000 square kilometers (approximately, the size of Great Britain) has permanently lost its soil-related functions, having been occupied by urbanisation. Each day, 3 sq km of soil dis ...
... fertility is the basis of agricultural production and, therefore, of human nutrition. In Europe, an area of nearly 200,000 square kilometers (approximately, the size of Great Britain) has permanently lost its soil-related functions, having been occupied by urbanisation. Each day, 3 sq km of soil dis ...
Soil entomology
... species, take over the role as keyspecies of decomposition from earthworms, as the latter recede in number and biomass. This is not only due to temperature conditions and the short growing season, but also because of the reduction of habitat structure. Dipterans are, however, a taxon which is among ...
... species, take over the role as keyspecies of decomposition from earthworms, as the latter recede in number and biomass. This is not only due to temperature conditions and the short growing season, but also because of the reduction of habitat structure. Dipterans are, however, a taxon which is among ...
Kingdom Animalia
... with body fluids; bathes organs and cells directly; common to molluscs and arthropods • In a closed circulatory system, the blood never leaves a system of blood vessels and is pumped by the heart; common to all vertebrates, annelids and cephalopods ...
... with body fluids; bathes organs and cells directly; common to molluscs and arthropods • In a closed circulatory system, the blood never leaves a system of blood vessels and is pumped by the heart; common to all vertebrates, annelids and cephalopods ...
Juan Marin, Laura Steckbeck, Nutrition/Microvilli Austin Ludwig
... abruption if it is not used immediately • Plants: make their own food through the process of photosynthesis (Ex. ferns) Roots are responsible for nutrient absorption Root hairs increase surface area and allow for more water and nutrients from the soil to be absorbed • Animals: certain animals contai ...
... abruption if it is not used immediately • Plants: make their own food through the process of photosynthesis (Ex. ferns) Roots are responsible for nutrient absorption Root hairs increase surface area and allow for more water and nutrients from the soil to be absorbed • Animals: certain animals contai ...
Earthworm
An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They are commonly found living in soil, feeding on live and dead organic matter. Its digestive system runs through the length of its body. It conducts respiration through its skin. An earthworm has a double transport system composed of coelomic fluid that moves within the fluid-filled coelom and a simple, closed blood circulatory system. It has a central and a peripheral nervous system. The central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve cord running back along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors are concentrated near its mouth. Circumferential and longitudinal muscles on the periphery of each segment enable the worm to move. Similar sets of muscles line the gut, and their actions move the digesting food toward the worm's anus.Earthworms are hermaphrodites—each individual carries both male and female sex organs. They lack either an internal skeleton or exoskeleton, but maintain their structure with fluid-filled coelom chambers that function as a hydrostatic skeleton.""Earthworm"" is the common name for the largest members of Oligochaeta (which is either a class or a subclass depending on the author). In classical systems, they were placed in the order Opisthopora, on the basis of the male pores opening posterior to the female pores, though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them, instead, in the suborder Lumbricina of the order Haplotaxida, but this may again soon change. Folk names for the earthworm include ""dew-worm"", ""rainworm"", ""night crawler"", and ""angleworm"" (due to its use as fishing bait).Larger terrestrial earthworms are also called megadriles (or big worms), as opposed to the microdriles (or small worms) in the semiaquatic families Tubificidae, Lumbriculidae, and Enchytraeidae, among others. The megadriles are characterized by having a distinct clitellum (which is more extensive than that of microdriles) and a vascular system with true capillaries.Earthworms are far less abundant in disturbed environments and are typically active only if water is present.