The sponges draw water carrying food particles into the spongocoel using the beating of flagella in the choanocytes. ... Compare the structural differences between Porifera and Cnidaria. Poriferans do not possess true tissues, whereas cnidarians do have tissues.
Answer:
Natural selection or genetic drift
Explanation:
Natural selection and genetic drift are two different evolutionary mechanisms that can lead to speciation. This is, to the origin of two species from a single species (the common ancestor).
Allopatric speciation is a type of speciation where emerging species arise after an ancestral population is divided by a geographical barrier preventing contact and therefore gene flow between individuals of split populations. The split populations eventually could become new species.
Natural selection occurs when the split populations changes genetically due to environmental pressures. The genetic drift occurs when the genetic changes are due to random sampling of organisms.
Both weathering and erosion are processes that wear away rocks. These two processes collaborate to break down rocks by removing or forcing out particles and sediment. Water is a force that helps both processes to occur.
The simultaneous arrival of graded depolarization and a graded hyperpolarization of equal but opposite magnitude at a particular location on the dendritic membrane is likely to cancel the effects of each other and no change will occur in the membrane potential.
Explanation:
Graded potentials lead to temporary minor changes in the membrane potential associated with neuron’s dendrites. The amount of change caused depends upon the size and duration of the stimulus. These can be depolarizing or hyperpolarizing.
Graded depolarization occurs due to the entry of sodium or calcium ions; whereas, graded hyperpolarization occurs due to exit of potassium ions or entry of chloride ions.
When equal but opposite magnitude of graded depolarization and hyperpolarization occurs at a particular dendride of a neuron, the positive and negative charges get neutralized causing little or no effect on the total membrane potential.
Answer:
Hello dear, I can't find the options, but here is a list of some important skills for nurses;
1. Catheterization
2. Empathy
3. Patient assessment
4. Infection control
5. Patient care
6. Telemetry
Explanation:
The skills section of the resume of nurses is meant to highlight the strengths of the nurse that are relevant to her job.
- Empathy which is the ability to feel the problems of the next person is an important skill that the nurse needs to treat the patients kindly.
- Catheterization is the ability to collect and inject fluids into the bladder using a latex tube. It is an important skill for nurses to master as patients might have conditions that affect the bladder and kidney.
- Patient assessment and care are core skills required of nurses.
- Telemetry is the ability to collect samples for measurement and analysis using a collecting device or equipment. All of these would create a good impression of the nurse in her resume.
