The alula is a small structure that is found on birds. It is located at the joint between the hand wing and the arm wings of birds and it is the freely moving, first digit of a bird's wing. It is normally used by birds in slow flight. In humans, the structure that is comparable to the alula is the thumb.
The 4 divisions of Gymnos:
1- coniferophyte
2- Cycadophyta
3- Ginkgophyta
4- Gnetophyta
Describe
1- Conifers : Pines , firs , redwoods
2- Coniferophyta : seeds , large
3- Cycadophyta : Tropical and subtropical
4- Ginkgophyta : Only living Meso Era survived in China .
I hope that's help !
Inbreeding is simply defined as the mating of relatives. It is a mating system in which individuals carry alleles that originated from a common ancestor. Inbreeding is considered a problem in humans because inbreeding increases the chances of receiving a deleterious recessive allele inherited from a common ancestor.
Answer:
Below
Explanation:
4) An endoskeleton is an internal skeleton made out of mineralized tissue that is attached to muscles as well as enabling movement.
5) An exoskeleton is the external skeleton that supports and protects an animal's body. As an example, a snail's shell is an exoskeleton
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A dive instructor begins his leson on the shore as he guides his student out into the water what zone are they in
