Molecules that have partially charged positive and negative areas are polar. Because water molecules are polar, water can dissolve many other polar substances. Water can also dissolve ionic compounds such as table salt.
<span>Three of the major characteristics used to classify organisms are cell structure, mode of nutrition and cellularity.
These characteristics help scientists determine how organisms are
similar to each other as well as how they are different from each other.</span>
Answer:
g. A cell model consisting of a circle containing four vertical pairs of lines attached at the middle, stacked in two rows of two.
Explanation:
In Metaphase I of the cells, homologous chromosome pairs are lined up next to each other which is defined as synapsis. Each pair of two chromosomes (bivalents) consists of four chromatids in total are positioned on the metaphase plate.
Metaphase I occurs when tetrads of chromosomes are lined up along the equator of the spindle. Spindle fibres are attached to the centromere region of each homologous chromosome pair. These homologous chromosomes consist of the matching alleles originating from mother and father.
In Metaphase I, meiotic recombination (''crossing over'') happens. Meiotic recombination means there is a genetic shuffling of the attributes of both parents. A result is a large number of possible genetic combinations. It is estimated that there is a 50-50 chance for the daughter cells to receive or mother's or father's homologous for each chromosome. In an organism with 2 sets of chromosomes, there are 4 ways in which the chromosomes may be arranged. This is resulting in differences in the chromosomal distribution in daughter cells after meiosis I.
Answer: its usually a blue line with triangles facing the way its moving
Explanation: a warm front would be a red line with half circles.
Answer:
Predator-Prey Relationship
Explanation:
If the extinction of one of the species leads to an increase in the population of the other species, then the relationship must be a predator-prey relationship, because the now-extinct species was keeping the now-increasing population of the other species in check.