Answer:
abiotic factors are factors that are not organ or biotic as one would say like the nevirmwnt or air or water biotic factors are things like tress food plants ect
Crystalline silica is a natural compound in the earth's crust and is a basic component of sand and granite. Silicosis is an incurable disease of the lungs caused by breathing crystalline silica dust. This dust can cause scar tissue to form in the lungs.
Answer:
10 arrangements, although the parents have brown hair, they have a recessive allele for the blonde hair. The two brown heads can make a blonde or brown and or course even a red haired child. In this case the parents with dominant brown hair have a recessive blonde hair giving them a chance to have 10 arrangements to have blonde hair due to their recessive allele.
Explanation:
Heterozygous means that to have inherited different forms of a particular gene from each parent. In this case the children will inherit both brown and blonde hair genes.
Answer:
A dominant trait is a trait that overpowers, a recessive trait is more rare.
Explanation:
Dominant traits are the most common trait in a pair. They will be seen the most often in offspring. Recessive traits are usually repressed traits that the parents had that were not previously visible
<h2>Xylem;phloem and cork</h2>
Explanation:
Wood is mainly known as secondary xylem found in trees
- Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leaves
- Secondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium
- Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and wider
- In large woody plants secondary xylem get differentiated into heartwood and sapwood
Bark is essentially made of phloem and cork
- Bark sole purpose is to provide protection to trees
- The inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plant
- The outer bark is a dead tissue which is the product of cork cambium
