Answer:A.Environmental issues are not always localized.
Explanation:Did on edge
The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen Explanation: google.
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
The american bullfrog is native to much of the eastern united states. this species has successfully begun to spread west as an invasive species. it is thriving in the western united states because of its large size, high mobility, and tremendous reproductive capabilities. american bullfrogs have very generalized eating habits and often eat the same food sources as the native frog species in the western united states, causing a reduction in the overall food supply. the relationship between the american bullfrog and native frog species in the western united states can best be characterized as ______.
Answer: Competition.
Explanation:
The relationship in between the American bull frog and native frog species is competition. This is because the food source is same for both of the species.
There will be competition as invasive species have entered in the region where native species used to live and now the food resources is being shared by both of them.
So, the competition among these two species will increase.
Answer:
Experiment 4. Relaxed, the drug will stop the calcium so that it does not act on the troponin
Experiment 5. Contraction: In order for the muscle to relax, the actin and tropomyosin union must occur.
Experiment 6. Relaxation: the release of the actin-myosin complex occurs with consumption of ATP, thus it slides and generates contraction, by adding a hydrolyzable analog, this reaction is avoided giving rise to a prolonged actin-myosin binding which leads to relaxation while last effect.
Experiment 7. Ca2 + Contraction is very necessary so that during muscle contraction troponin can be extracted.
