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tatuchka [14]
3 years ago
14

Answer these two please

Biology
1 answer:
Svetradugi [14.3K]3 years ago
4 0
The answer to question one is a dissecting microscope.
The answer to question two is the third option about three-dimensional images
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Where are coal, oil, natural gas commonly found
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Saudi Arabia, Russia, the United States, and Iran

Explanation:

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What are the loosely packed photosynthetic cells in the leaf called? A. epidermis B. guard cells C. spongy mesophyll D. palisade
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Answer: Option C

Explanation:

These cells are soft because of its function. Gaseous exchange takes place by the help of these cells. Spongy mesophyll cells are covered by thin layer of water and are loosely packed.

This is because, during the day time when the plant is performing photosynthesis these cells allows the carbon dioxide into the mesophyll cells and the oxygen out of the plant body.

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3 years ago
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Nerves that supply bone accompany ____________ through the nutrient foramen. they are responsible for the innervation of the bon
Cerrena [4.2K]
Nerve that supply bone accompany blood vessels through the nutrient foramen. They are responsible for the innervation of the bone as well as its outer covering, the periostem, the inner lining of the medullary cavity, the endosteum, and the medullary cavity. The nerves that innervates these structures are mainly sensory nerves that signal injuries to the skeleton.

Blood vessels enter the bones from the periosteum through the nutrient foramen (a small opening or hole in the bone), where the nutrient artery enters and where one nutrient veins exists in bone. The blood vessels supply nutrients and oxygen required by cells and remove the waste products from the cells of the bones.

Endosteum functions to cover and lines the bone, it is an incomplete layer of cells that covers all internal surfaces of the bone within the medullary cavity. It contains the Osteoprogenitor cells, osteoblasts and osteoclasts which are important cells of the bone.

Periosteum on the other hand is a fibrous, thick membrane covering the external surface of the bone, apart from the articular cartilage on the epiphysis. It is made of two layers: the outer fibrous layer of dense irregular connective tissues that protects the bone from external structures, anchors the blood vessels and nerves to the surface of the bone. It also  serves as an attachment site for ligaments and tendons. The inner cellular layer contains various cells which includes the osteoprogenitor, osteoclasts and osteoblasts.



5 0
3 years ago
Which cellular process takes place in the ribosomes that are bound to the endoplasmic
valentina_108 [34]
A. The synthesis of new proteins
6 0
3 years ago
In 2018, a research group is interested in studying the relationship between exposure to a particular chemical and reproductive
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Epidemiological Study

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This type of study is called and epidemiological study. The design of this study uses a group or individual that have been exposed or not been exposed to a certain condition. The parameters will account for similar age, sex working habits etc. This will correctly identify if the contributing factor is the exposure of the agent or otherwise.

4 0
3 years ago
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