There are two types of reproduction: Asexual and Sexual. Asexual reproduction mostly occurs with bacteria, or other one celled organisms. Sexual reproduction happens with multi-celled organisms, like humans, or whales. With asexual reproduction, the bacteria (for example) undergoes the process of fission: when the DNA splits it's two strands apart (into RNA) and repairs them into two identical strands of DNA. then, the strands move to opposite sides of the cell, and the cytoplasm (gel like interior of the cell) pulls apart, and pinches off. duplicating the cell. With sexual reproduction, the male haploid cell (sperm cell(half the usual amount of chromosomes)) binds with the female haploid cell (egg cell) and creates a zygote (fertilized egg). From there, the chromosomes uncoil into DNA, and the cell starts it's life processes. [i think,]
The answer is letter B. There was a Salmonella outbreak in
the US when some of the patrons in a restaurant in Ohio were infected with
Salmonella Enteritidis on the egg shells of the eggs being used as one of the
ingredients of a home-made mayonnaise. There were 80 people who were infected
with Salmonella from that restaurant.
Answer:
A paleontologist is a scientist who studies the history of life on Earth through the fossil record. One example is dinosaur fossils. Paleontologists will examine fossilized droppings in order to see what the dinosaurs ate! Hope this helps! A scientist who studies plants is called a Botanist. A scientist who studies living things is a biologist, and a scientist who studies the ocean is called a oceanographer.
C is the answer. Happy learning!
A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is negatively charged. The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are called covalent bonds because the atoms share electrons. The hydrogen atoms have one electron each.
Because they share those electrons with the oxygen atom, the electrons tend to stay close to the oxygen atom and the outside of the hydrogen atom tends to be positively charged. The oxygen atom has eight electrons. Most of those tend to stay away from the hydrogen atoms and cause the outside of the oxygen atom to have a negative charge.
<span>When two water molecules get close together, the polar forces work to draw the molecules together. The oxygen atom of one water molecule will bond with several hydrogen atoms of other water molecules. These bonds are called hydrogen bonds.</span>