Answer:
Tropical forest
Explanation:
Plants growing towards air that has higher humidity levels are examples of _____.
Hydrotrophism
Answer:
Option A
Explanation:
Complete question is
A client with a digoxin level of 2.4 ng/ml has a heart rate of 39. The health care provider prescribes atropine sulfate. Which of the following best describes the intended action of atropine for this client?
Select one:
a. To accelerate the heart rate by interfering with vagal impulses.
b. To reduce peristalsis and urinary bladder tone.
c. To dry oral and tracheobronchial secretions.
d. To stimulate the SA node and sympathetic fibers to increase the rate.
Solution -
Atropine improves the performance and output of cardiac system by inhibiting the action of vagal or parasympathetic. The rate of discharge from the sinus node (SN) increases and hence the chances of ventricular ectopy reduces.
This drug must be administered rapidly to prevent reflexes of bradycardia. The common dosage regime is 0.5 mg per 3 minutes in adults or as per the instructions of doctor.
Hence, option A is correct
b. without air.
c. in water.
d. in soil.
Answer:
C. When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.
Explanation:
Darwin suggested natural selection as the mechanism that explained the evolution of species. This idea states that a population of individuals living in a certain environment is adapted to thrive in it. However, if there is a change in the environment, individuals must adapt in order to survive, otherwise they will die. Only a handful of individuals which had a particular (and random) variation before the change of the envirnonment will be able to adapt and survive. If the variation is heritable, the next generation will have that same trait and will be able to thrive in the new environment.
In the answer C., a population of bacteria is composed of some individuals which are susceptible to the antibiotic and some individuals that are resistand because they possess a mutation in their DNA that allows them to survive an environment with antibiotics. If no antibiotic is present, then both types of bacteria can survive. However, if they are exposed to the antibiotic, the previously resistant bacteria are the only ones that will be able to survive and reproduce.
Secondary consumers must eat more often or consume more prey to obtain the same amount of energy as primary consumers.
Secondary consumers usually eat a smaller quantity of food than primary consumers because they obtain their energy from consuming other organisms rather than directly from photosynthesis.
This means that a significant amount of energy is lost as it is transferred up the food chain. For example, only around 10% of the energy stored in plants is transferred to herbivores, and only around 10% of that energy is transferred to carnivores.
This means that the higher up the food chain an organism is, the less energy is available to it.
Therefore, secondary consumers must eat more often or consume more prey to obtain the same amount of energy as primary consumers.
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