Answer:
Red blood cells (erythrocytes)
Red blood cells carry oxygen from your lungs to your tissues. They also bring carbon dioxide back to your lungs. Red blood cells make up almost half of your blood. The lifespan of a red blood cell is around 120 days
Explanation:
b. placer mining
c. subsurface mining
d. none of the above
Answer;
-Surface mining
Explanation;
-Mining involves the extraction of valuable minerals or other geological materials from the earth, commonly from an orebody, lode, vein, seam, reef or placer deposit. Despite having a large range of advantages economically, mining impacts the environment negatively because minerals are contained within the Earth. Earth must be removed in order to extract the minerals. When the minerals are close to the surface, the earth is removed, causing destruction to the shape of the land and the flora and fauna living in that area.
-Among different types of mining, surface mining is one of the method that greatly impacts the environment. It destroys all plant life in the area the mine occupies. Plants living in the area where the surface mine is to be located are removed. After the surface mine is no longer productive, plants may eventually return to the area, but typically some human efforts at reclamation are required to restore the environment to some level of productivity.
Answer:
It's C. subsurface mining
Explanation: hope it helps ^w^
B) meristem
C) ground
D) vascular
D. Vascular tissue
Vascular tissue is known to be a complex conducting tissue that is formed by the arrangement of multiple cell types in vascular plants. Thus, the transportation of minerals, water and other products of photosynthesis occurred through the vascular tissue which is transported throughout the plant. However, both xylem and phloem are primary component of vascular tissue.
HELPPP MEEE PLSSSS
Answer;
The enzyme structure begins to break downintermolecular bonds are broken
enzyme molecules gain kinetic energy.
Explanation;
Enzymes are proteins that play an important function in the body of catalyzing reactions in the body.
Enzymes work best at optimum temperature; low temperature lower than optimum temperatures deactivates them and higher temperature denatures them.
The shape of an enzyme depends on its temperature; when they get too warm they get loose, and at very low temperatures they get too tight. At optimum temperature or at the right temperature then they are just at the right shape and the chemical reactions they catalyze will be at optimal rate.
B. Blood components are continuously circulated through the blood vessels.
C. Blood components are continuously produced in the bone marrow.
D. Blood components are continuously digested by enzymes.
Answer: The correct answer is- C. Blood components are continuously produced in the bone marrow.
Formation of blood cells is a continuous process that occurs in the bone marrow ( a gelatinous, soft tissue present within bones) of adults.
This process is called as hematopoiesis, in which undifferentiated precursor cells ( also called stem cells) are developed and differentiated into particular blood cell type ( having specific function).
Thus, through this continuous process, all the components of blood can be replenished whenever they are required.
Therefore, when a person donates blood, he never run out of it.