There are many different types of cancer, each caused by different factors is the statement which best explains why cancer is so difficult to cure.
The option D is correct.
Explanation:
Cancer is an abnormal growth of cells in which the check on the cell cycle and programmed cell death ceases.
The mutation in the genes or DNA causes cell to divide profusely overpowering the check points of the cell division.
The cancer in particular cell is no longer at a single cell but it metastasizes to other organs and building its own capillaries to get nutrition.It gets difficult to treat the disease as many organs get affected.
Cancer is caused by lifestyle, mutation, carcinogens, eating habits, genetic factors or age related etc.
There are different strategies required to treat and prevent the cancers caused by different factors. So not one factor can be taken for the treatment purpose. Different organs affected with cancer require different line of treatment so it gets difficult to apply same strategy for everyone.
The capacity of photosynthesis to convert Solar energy into Chemical energy provides both a nutritional and an energy basis for all heterotrophic living things.
Green plants and certain other organisms convert solar energy into chemical energy through a process called photosynthesis.
Light energy is gathered and utilized during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.
In many different ways, photosynthesis is advantageous to heterotrophs. They rely on the method for the creation of oxygen, which happens to be a result of photosynthesis.
Additionally, photosynthesis maintains the autotrophs on which heterotrophs rely for survival.
Learn more about photosynthesis here brainly.com/question/26568636
#SPJ4
Natural selection occur to give the best survival chance to the organisms. Hence, they bring about biological evolution through future generations thereby increasing the variety of living things. This survival reflects on their ability to produce more offspring. The offspring must continue to survive by competing with the resources found in nature.
Answer:
Changes in natural flow regimes as a result of water extraction and supply direct modification or destruction of important habitat barriers to the movement of the plants and animals.
Explanation:
Answer:
patented products
Explanation:
A patented product is one that has gone through a public concession process that has ruled that a particular company or manufacturer has exclusivity in the manufacture and distribution of that product on the market.
There is a concern about the existence of patented products in relation to genetically modified organisms, because this may prohibit the manufacture of similar products. In the case of agricultural crops, this concern becomes even greater, because the controversy of genetically modified and authenticated crops may end up being invaded and contaminating the plantation that has not been genetically modified, causing the producer to lose production rights for the contaminated crop.