Why do evolution takes place?

improve their internal efficiency and their adjustment to their environment. Natural selection causes a gradual change in the characteristics of the species.In some species, females prefer males with different traits. This leads to evolution of a species where males have traits that are markedly different from that of females.Directional selection is the evolution of characteristics that assist

What are the benefits of breast feeding a child ?

Mothers milk is undoubtedly the best food for babies. It is a living fluid and contains exactly the right amount of nutrients required by a baby, in the right proportions, to ensure that the baby gets the perfect balanced meal. No manufactured milk, no matter how fortified it may be, comes even close to being as nutritious as breast milk.Increases immunityNeedless to say, a newborn is extremely

What is Cellular cloning?

Cloning a cell means to derive a population of cells from a single cell. In the case of unicellular organisms such as bacteria and yeast, this process is remarkably simple and essentially only requires the inoculation of the appropriate medium. However, in the case of cell cultures from multi-cellular organisms, cell cloning is an arduous task as these cells will not readily grow in standard media.A

what is transmembran protine

A transmembrane protein is a protein that spans the entire biological membrane. Transmembrane proteins aggregate and precipitate in water. They require detergents or non-polar solvents for extraction the lipids that make up the membrane and are referred to as transmembrane proteins. Transmembrane proteins are a class of integral proteins i.e., proteins that penetrate into or through the membrane bilayer

How frogs let your body moisture?

cold-blooded: having a body temperature not regulated by the body and close to that of the environmenthibernate: to pass the winter in a sleeping or resting stateamphibian: any organism that is able to live both on land and in watermetamorphosis: a change in the form of an animal from tadpole to froggills: an organ as of a fish of thin plates or threadlike processes for obtaining oxygen from water

What is the term of sex cell division?

From the time of puberty on, men make sex cells in the form of sperm cells continuously. In contrast, by the time a female is born, she has made all of the eggs that she will ever have. As she reaches puberty, the eggs begin to develop and get released, and this process continues until menopause. In both males and females, the production of sex cells involves meiosis, a type of cell division

Hippo lives in the same habitat as a crocodile,though the former is a herbivore and crocodile a ferocious carnivore.How is this possible.?

Hippo lives in the same habitat as a crocodile,though the former is a herbivore and crocodile a ferocious carnivore.How is this possible.?

Hippo lives in the same habitat as a crocodile,though the former is a herbivore and crocodile a ferocious carnivore.How is this possible.?

I found a small creature washed up on the shore. It was soft at first but when I touched it, it became hard and looked like a rock. Was it a slug? from N.C.?

Wats diif betwee vegitb & fruit...?

A fruit is a ripened ovary, enclosing the seeds which are the mature ovules. They can arise from a single carpel, or several carpels fused together,or seperate carpels. A vegetable is not developed from a flower. English speaking, if it has seeds, it is a fruit.A fruit is actually the sweet, ripened ovary or ovaries of a seed-bearing plant. A vegetable, in contrast, is an herbaceous plant

What is soul?how can we here its voice?

Definitions of soul :the immaterial part of a person; the actuating cause of an individual life deep feeling or emotion the human embodiment of something; "the soul of honor" a secular form of gospel that was a major Black musical genre in the 1960s and 1970s; "soul was politically significant during the Civil Rights movement" The spiritual part of man that survives death

Which mivroorganism causes spine flu?

Ankylosing spondylitis: A type of arthritis that causes chronic inflammation of the spine and the sacroiliac joints. Chronic inflammation in these areas causes pain and stiffness in and around the spine. Over time, chronic spinal inflammation spondylitis can lead to a complete cementing together fusion of the vertebrae, a process called ankylosis. Ankylosis causes total loss of mobility

What is Cleanliness?

cleanliness which are achieved by working in cleanrooms.However, dirt may play a useful role in our immune systems, cleanliness will reduce th risk of diseases such as typhoid and diarrhea. This shift commonly used tests rely on the wetting behaviour of a clean hydrophillic metal surface.Cleanliness is also important to vacuum systems to reduce outgassing....CLEANLINESS means different things to different

What is difference between protoplasm and cytoplasm ? I want explanation.........?

in the protoplasm. In many plant cells most of the volume of the cell is not occupied by protoplasm, but by "tonoplast," a large water filled vacuole enclosed by a membrane.----------------- ---------------------...Cy toplasm is a gelatinous, semi-transparent fluid that fills much of the volume of cells. Eukaryotic cells contain organelles, such as mitochondria that are filled with liquid that is kept separate