C The percentage of humus in the soil will decrease.
Explanation:
The percentage of the humus in the soil will decrease if the decomposers that livers in the field dies.
Decomposers are organisms that breaks down organic matter in nature. They are usually a group of micro-organisms that feeds on dead plant and animal matter.
- Decomposers reduce dead organisms and plant matter into organic matter.
- Soil is made up of soil air, organic matter, water and rock materials.
- Soil organic matter is in form of humus in the soil.
- When decomposers are no longer available in the soil, the organic matter diminishes.
- The soil will therefore lack humus.
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Human chorionic gonadotropin is secreted from the placenta. The correct option is D.
<h3>What is HCG?</h3>
HCG is known as Human Chorionic Gonadotropin.
It is a hormone secreted by the placenta during pregnancy.
The hormone specifically functions to thicken the wall of the uterus in order to be able to support the growing embryo.
It also signals to the body system to halt the process of menstruation.
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Answer:
The product that must be produced to kill a bacterium —which causes a disease— is an antibiotic, which through biotechnology can investigate the structure of the bacterium and synthesize the chemical formula needed to produce antibiotics in high amounts.
Explanation:
Antibiotics are specific medicines for the treatment of infectious diseases, produced by bacteria. <u>Antibiotics can kill bacteria and prevent their replication</u>.
If a disease is produced by bacteria, the product that is necessary to kill those microbes is an antibiotic, for which biotechnology is useful.
By using biotechnology —a branch of biology that uses technology as a research and development tool— it is possible:
- <em>Know the structure, functions and behavior of pathogenic bacterial strains.
</em>
- <em>Create chemical formulas -antibiotics- that serve to effectively eliminate bacteria, and cure infectious diseases.
</em>
- <em>The synthesis and production of antibiotics on a large scale, allowing their sufficient availability for use.</em>
Intrasexual selection
Intrasexual Selection is when
members of the same sex within a species contend emulously with each other in
order to acquire chances to mate with others such as the male against male
competition for females. This type of selection often involves posturing and
fighting. Species or individuals suitable for intrasexual selection will possess
developed better weapons than their competitors.
1,560,000 milliseconds is 26 minutes and 26 minutes is about .43 hr
so the second one is the correct answer
