There is a difference between the stem of these two plants because Ranunculus is dicot and Zea mays is a monocot. <span>Zea mays does not have a vascular cambium and has scattered vascular bundles composed of xylem and phloem tissue. On the other hand, Ranunculus has its vascular bundles in a ring arrangement and ground tissue is differentiated hypodermis, cortex, endodermis, pericycle and pith (there is no differentiation in Zea mays).</span>
The thermosphere is the hottest layer of the Earth.
Answer:
here
Explanation:
The principle sources of nitrate contamination in water are thus fertilizers, animal waste, and septic tank wastes. The water supplies most vulnerable to nitrate contamination are in agricultural areas and in well waters having a close or hydraulic relationship to septic tanks
Tissue repair refers to the process of restoration of the tissue organization, as well as the recovery of its function, after an injury. This process (tissue repair) occurs naturally in the damaged tissues after injury.
- The sequential steps for the tissue repair are as follow:
- Platelets from torn vessels form a mesh-like clot that prevents blood loss.
- Inflammation occurs in the area as tissue repair begins.
- Mast cells release histamine that dilates blood vessels and increases blood flow to the repair site, further promoting clot formation.
- Neutrophils and macrophages consume bacteria and remove damaged tissue and debris.
- Fibroblasts build new tissue by secreting collagen that takes the shape of the original tissue.
- The tissue created by fibroblasts matures and regains its normal function.
- Platelets are tiny blood cells that act as a healer of damaged tissues by forming clots capable of stopping bleeding.
- Inflammation in tissue repair is caused by the induction of chemokines and pro-inflammatory cytokines at the site of the injury.
- Mast cells act to enhance acute inflammation, promote angiogenesis and skin scarring.
- Neutrophils and macrophages are blood cells that phagocytose and kill harmful pathogenic microorganisms at the site of the injury.
- Fibroblasts act to break down the fibrin clot, helping to the healing process.
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They're two types of variables, one being the responding the other being the controlled.
1-The controlled would be the light since the scientist would manipulate how much light the earthworm is given.
2- The responding would be the earthworm activity since it is reacting to the amount of light on it.