Plant cells<span> have a </span>cell<span> wall, chloroplasts and other specialized plastids, and a large central vacuole, which are </span>not found<span> within </span>animal cells<span>.</span>
Answer: Keystone species
Explanation:
A keystone species is the species on which other species of the ecosystem depends on. The keystone species can be a predator or prey. It maintains the balance of the population of other species in an ecosystem.
I believe the answer is c) 9:3:3:1 ratio (9 polka-dot tails and short eyelashes, 3 polka-dot tails and long eyelashes, 3 solid tails and short eyelashes 1 solid tail and long eyelash)
Answer:
I tried
Explanation:
1) As human age, their respiratory system also ages making gaseous exchange less and less effective. With age the bone and muscular strength of tissues that keep the respiratory tract open lessen and it becomes the tract slowly collapses. The alveoli also age and become baggy losing their shape. The dead space between alveoli also increases.
This is accelerated by some environmental conditions such as air pollution and smoking. When particulate matter settles in the lungs and alveoli, it causes accelerate damage to the lung tissues and scarring. This is why people in chronically polluted areas, generally speaking, live less longer than people in cleaner environments especially due to respiratory problems they develop.
2) The oral cavity- Includes the lips, teeth, and tongue. The structures serve as articulators. The pharynx and the oral cavity- Both act as resonators that selectively amplify to varying degrees of intensity, fundamental tones and overtones. The larynx- An organ consisting of a cartilaginous framework containing muscles and joints. The vibratile part of the larynx are the vocal folds which are the producers of sound. The Lungs- They supply a stream of air which passes through the trachea.
3) Gas exchange occurs between the alveoli sacs and small capillaries of the circulatory system. Via this exchange, oxygen is delivered from the lungs to the bloodstream. The oxygen attaches to the hemoglobin of red blood cells. The red blood cells then transport the oxygen to cells, such as those located in your muscles.
