Answer:
The technique that is used in inserting a gene into a crop is genetic modification.
What is genetic modified crop?
A genetically modified organism (GMO) is a living organism whose DNA has been altered using genetic engineering techniques.
Humans have used breeding methods to modify organisms for thousands of years. Over generations, corn, cattle, and even dogs have been selectively bred to have certain desired traits.
The majority of GMO crops grown today were developed to assist farmers in preventing crop and food loss and controlling weeds.
The following are the most common traits found in GMO crops: Resistance to certain harmful insects, and Tolerance to certain weed-controlling herbicides.
Thus, with the help of genetic modification, a gene that controls beta-carotene production can be successfully inserted into a common food crop.
They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe.
If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm's circulatory system, and the worm's hearts pump the oxygenated blood to the head area.
It’s the last one - it is breathed out
Normal cells in the body follow an orderly path of growth, division, and death. Programmed cell death is called apoptosis, and when this process breaks down, cancer begins to form.
The answer is B. The specific heat means the heat amount the substance needs to absorb when the temperature increases 1℃. The high specific heat means that it needs a huge amount of heat when increase just 1℃. For A, the dissolved salts can help decrease the freezing point.
