Ecosystem is a community or group of living organisms that live in and interact with each other in a specific environment.
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
All domestic mammals have seven cervical vertebrae.
The question is incomplete and no options are available. So, the answer includes all the common statements.
Answer:
Theophylline may be defined as a drug used to treat the different respiratory diseases like asthma and COPD. The proper dosage of the drug required for the treatment.
The client is undergoing for the treatment. The serum level can be used to determine the therapeutic levels. The nurse can say that the drug is showing negative or excess effect. The drugs showing some immune reaction due to its high level.
<u>Answer:</u>
Recent evidence suggest that feathers evolved from scales and suggest that 'feathers and pycnofibers' could be homologous.
<u>Explanation:</u>
- One of the major difficult issue related to bird evolution is the evolution of feathers.
- Feathers are considered as the most 'complex integumentary structures' which are found in vertebrates.
- Evolutionary developmental biology suggests that the 'planar scale structure' is been modified for developing into feathers by 'splitting' to form web like structures.
- Scales and Feathers consist of 'two distinct form of keratin' so it was thought that 'each type was exclusive skin structure' but recent study suggests that they are developmental expressions of same skin structures.
Answer:
the external oblique.
Explanation:
<u>the external oblique</u> covers the ventral, abdominal region in rats.
