<h3>Which three symptoms would earn a diagnosis of metabolic syndrome?</h3>
Answer:
a. obesity around the waist, low hdl levels, and high levels of triglycerides.
Answer:
Vì thế sinh vật nhân thực được phân chia thành 3 nhóm chủ yếu là dị dưỡng (Animalia, Fungi, Protozoa) và 2 nhóm chủ yếu là quang hợp, (Plantae, bao gồm cả tảo đỏ, tảo lục và Chromista.
<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.
