Answer:
alveoli
Explanation:
The alveoli are small pockets present in the lungs. They are extremely important in the living organism, because the carbon dioxide that is excreted passes directly from the blood to the alveoli. These pulmonary pockets are located inside the lungs and originate through the bronchial branches, have a spongy appearance and vascularized walls.
It is in the alveoli that the gas exchange essential for living organisms occurs. The alveoli have a very thin membrane that separates air from blood, it is because of this membrane that carbon dioxide is excreted.
Green plants are green because of the pigment chlorophyll, which absorbs most wavelengths of light except for green. The wavelength of light being reflected or transmitted by green plants is in the range of approximately 500-570 nanometers.
Green plants appear green because they contain a pigment called chlorophyll, which absorbs most wavelengths of light except for green. This means that green light is reflected or transmitted by the plant, which is then detected by our eyes as the color green.
The wavelength of light that is being reflected or transmitted by green plants is in the range of approximately 500-570 nanometers. This is within the visible light spectrum, which ranges from about 400 to 700 nanometers.
#SPJ3
Answer:
The correct answer is mesosphere.
Explanation:
The atmosphere exhibits five distinct layers, which are determined by the modifications in temperature that take place with the upsurging altitude. These are troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Of the mentioned layers, the mesosphere, that is, the layer present above the stratosphere is considered as the coldest layer of the atmosphere. The coldest portions of the atmosphere are situated in this layer and can reach up to -90 degree Celsius.
extinction would lead to the extinction of other forms of life. A keystone species helps to
support the ecosystem of which it is a part.
An example of what can happen when a keystone species is removed occurred when fur
hunters eliminated sea otters from some Pacific Ocean kelp beds. Otters eat sea urchins,
which eat kelp. With its major predator gone, sea urchin populations exploded and
consumed most of the kelp. Fish, snails, and other animals associated with the kelp beds
disappeared.
The grizzly bear is another example of a keystone species. Grizzlies transfer nutrients
from the ocean ecosystem to the forest ecosystem. The first stage of this transfer is
performed by salmon that swim up rivers, sometimes for hundreds of miles. Salmon are rich
in nitrogen, sulfur, carbon, and phosphorus. The bears capture the salmon and carry them
onto dry land, scattering nutrient-rich feces (wastes) and partially eaten salmon carcasses.
It has been estimated that the bears leave up to half of the salmon they harvest on the
forest floor.
Which sequence best represents the feeding relationships in a kelp ecosystem that has not been disturbed
by humans?
(1) sea urchins → kelp → fish (3) kelp → sea otters → sea urchins
(2) kelp → sea urchins → sea otters (4) sea urchins → snails → kelp
The correct sequence displaying the feeding relationships in an undisturbed kelp ecosystem is: kelp → sea urchins → sea otters. Kelp serves as a food source for sea urchins, which in turn are consumed by sea otters.
The sequence that best represents the feeding relationships in a kelp ecosystem that has not been disturbed by humans is (2) kelp → sea urchins → sea otters. In an undisturbed ecosystem, the kelp, being a producer, forms the base of the food chain. Secondly, the sea urchins, as primary consumers, feed directly on the kelp. And finally, the sea otters are secondary consumers that prey on the sea urchins, maintaining the balance in the ecosystem.
#SPJ6
The domain containing all organisms with eukaryotic cells is the Domain Eukarya. There are only three domains; the Archaea, Bacteria and Eukarya. Domain Eukarya came from the first prokaryotic cells billions of years ago.
The domain containing all organisms with eukaryotic cells is Eukarya. These include organisms like plants, animals, fungi, and protists, all having cells with nucleus.
The domain that includes all organisms with eukaryotic cells is called Eukarya. Eukaryotic cells are characterized by having a nucleus and other membrane-bound organelles. This domain includes a wide variety of life forms such as plants, animals, fungi, and protists. Each of these groups of organisms has cells with a nucleus, which separates their genetic material from the rest of the cell.
#SPJ6
a. maintaing healthy soil and water
b. increased use of fertilizer
c. safe distribution of food
d. biodiversity