Answer:
Thyroxine is a hormone the thyroid gland secretes into the bloodstream. Once in the bloodstream, thyroxine travels to the organs, like the liver and kidneys.
Explanation:
The following events are provided;
A.The height of the civil rights struggle in the United States
B.The Civil War
C.The Great Depression
D.The first appearances by the Fisk Jubilee Singers
The answer is; B, A, D, C
- America civil war occurred in 1861
- The height of the civil rights struggle in the United States was in the 1870s
- The Great Depression occurred in 1929
- The first appearances by the Fisk Jubilee Singers were in 1871
Answer:
Accumulation of waste products.
Explanation:
The accumulation of the waste products under the tree is the limit factors that affects the growth of the grass. The accumulation of the waste products proposes that the molecules are damaged by the oxidation process and they are accumulated on the soil.
The leaves of the beech tree shades and falls on the ground and it decays there forming a rich soil. It covers the grassland nearby. Also the beech tree branches out making a small canopy over the grassland. So sunlight is prevent to reach the ground. This limits the growth of the meadows and thus the population of the meadow grass is seen to decline under the tree.
Saliva is produced in and secreted from salivary glands. The basic secretory units of salivary glands are clusters of cells called an acini. These cells secrete a fluid that contains water, electrolytes, mucus and enzymes, all of which flow out of the acinus into collecting ducts.
