Answer:b. Facilitated transport
Explanation:in the usual activities of the cell,it's cell membrane is responsible for the movement of substance in and out of the cell.
Such substances include nutrients,water, oxygen etc.
The plasma membrane select the substances that it allows into the cell thus it is said to be selectively permeable.
The plasma membrane of the cell has a phospholipid bilayer made up of cholesterol, proteins and glycoproteins.
The proteins on the membrane are useful for facilitated diffusion.
In this diffusion process,the proteins helps to carry large molecules across the cell membrane.such molecules includes glucose,amino acids etc.
In the process energy is not expended so it is a type of passive transport.
Answer:
B Sunlight Because it gives it to plants and animals eat plant and we eat animals
Explanation:
Answer:
Pet keeping wasn't generally accepted in Europe until the end of the 17th century, and it wasn't common among the middle classes until the late 18th century. Pet keeping in its present form is probably a 19th century Victorian invention. At this time, it was perceived as a link with the natural world, which itself was no longer seen as threatening. It also allowed a visible demonstration of man's domination over nature.
In present-day societies, dogs have a number of functional roles, from ornamental to status symbol, as helpers, and as companions. Dogs can also act as a channel for personal expression because people express their personality in the breed they own. For example, rare breeds are often used as indicators of status. Guide dogs for blind people and hearing dogs for deaf people are examples of pets who are kept as helpers.
But the most common reason for owning pets in Western societies is companionship. In recent years, there's been a growing awareness of the very positive effects this relationship can have on human health and psychological well-being, and a recognition of the therapeutic value of companion animals.
The hen. The hen came fist in order to lay the egg. God just the hen on earth
I believe lactic acid fermentation is used for all three!
