Answer:
Cell membrane provides protection for a cell. It gives assurance to a cell. It likewise gives a fixed climate inside the cell, and that film has a few distinct capacities.
Explanation:
Answer:
Omnivore
Explanation:
Squirrels mainly eat fungi, seeds, nuts and fruits, but they will also munch on eggs, small insects, caterpillars, small animals and even young snakes.
Answer:
1. hydrogen; 2
2. it means two strands of DNA twisted around each other like a winding staircase
Answer:
This will reduce the average temperature of the planet and lessen the catastrophic effects of climate change.
Explanation:
Renewable resources do not emit greenhouse gases making them the cleanest, the most sustainable solution to prevent environmental degradation. If humans slowly transition to an energy system that is based on renewable technology, this will have a very positive economic consequences as well for economist foresee an increase in well-being and in employment and less cost while allowing development today without risking the future generations.
Answer:
Most people experience increased infant mortalities at high altitudes due to the inability of the mother to provide sufficient oxygen to the developing fetus but now variation in the DNA sequence in the people that lives at higher altitudes like in Tibetans allow normal level of infant survival at high altitudes.
This variation occurred in the EPAS1 gene in the Tibetan population that is responsible for delivering oxygen more efficiently to the fetus. This nucleotide variation is also present in low landers of Beijing but natural selection selected the variant gene in Tibetan people because they require this mutated gene for their survival.
So the population passed this variant gene in next-generation, therefore, inheritance allowed the spreading of the mutated gene to the next generation therefore by natural selection and inheritance a mutated gene spread through a human population that had just begun living high in the mountains.
