Answer:
joining small molecules together to form long chains
Explanation:
plastics are actually polymer which is made by joining small units know as monomer. for e.g butene ethanol
Answer: It's most likely Gamma Rays.
Explanation:
The pregnant woman should be able to reiterate the meaning of breastfeeding such as it is best for babies, economical, easily digested, reduces risk of allergies,milk does not spoil, good for mothers as well. She should also demonstrates some of the different types of breastfeeding positions like cradle hold, crossover and football hold.
Answer:
<u>Sister chromatids are identical forms of chromatids of a chromosomes. They are mostly formed by semi-conservative replication of DNA molecule of a single chromosome.Thus they are like </u><u>'photocopies' </u><u> of original parent chromosomes; joined together at the Centromere</u>.
They are exactly similar in all ramification; with the same gene and allele compositions..
<u>However; slight differences arise between the two identical sisters due to </u><u>mutation</u><u> from</u><u> errors </u><u>at replication;and also in the length of telomere repeats.</u>
Non-sister chromatids are dissimilar forms of chromatids of a chromosomes formed when each half of a chromosome at fertilisation from separate haploid sex-cells, of each parent. fused.They contain different genetic composition;because they are not on the same homologous chromosomes.Therefore crossing -over ensure variation.
<u>However, they are genetically similar in composition; if they are contained in homologous chromosomes</u>. This is because Synapsis of bivalent of these chromosomes allow genetic material to be shared by chromosomal crossing-over between the non-sister chromatids on the chromosomes ; therefore identical genetic characteristics are shared .
Explanation:
Answer:
The polar bears which live in the tundra are not as omnivorous as the polar bears of the temperate forest because there are lesser plants and trees to be seen in the tundra region. The polar bears of the tundra are white in colour so that they can camouflage with the snow which is an adaptation for them to hide from their predators. The polar bears also have thick layers of fat which help to keep them warm as the temperature is very cold in these regions.
The choice of diet is important for organisms because an organism will be able to survive in an environment only if it has enough food sources to survive in a particular area. Hence, an organism should have the adaptation to feed on the sources of food available in an area in order to survive in the area.
