genetic drift
Explanation:
Genetic drift is changes in allele frequencies of a gene pool due to chance or random events. This can occur in large or small populations. Genetic drift causes gene pools of two isolated populations to become dissimilar as some alleles are lost and other are fixed.
Answer:
A point mutation is a change in the base sequence of a DNA molecule.
Explanation:
The aquifer which will be most effective in purifying polluted ground water is AN AQUIFER COMPOSED MAINLY OF SAND.
An aquifer refers to a zone of permeable rock strata which transmit ground water freely. An aquifer must be permeable and porous. Ground water can be extracted from an aquifer by using a water well.
Answer: Via ice chips or water, although not appropriate for all patients.
Explanation:
Patient is allowed to drink water btwn meals (beginning a minimum of 30 mins after meals); oral care must be done prior to consuming water; patient should be upright and use appropriate swallowing strategies.
Answer:
Cell division
Explanation:
Cell division is directly responsible for root growth in plants.
