The answer should be advantame
Answer:
many alveoli are present in the lungs with a shape that further increases surface area. Thin walls - alveolar walls are one cell thick providing gases with a short diffusion distance. Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface.
Explanation:
true or false....
False. Eggs are not motile as they are the female reproductive cell and lack the ability to move on their own. They typically require the assistance of a sperm cell to fertilize and develop into an embryo.
Motile refers to the ability of an organism or cell to move or propel itself actively. In the case of eggs, it is not correct to describe them as motile since they are typically stationary and do not have the ability to move on their own.
Eggs may be carried by an organism or external factors such as water or wind, but they do not move under their own power.
Eggs are not motile. Motility refers to the ability of an organism or its parts to move spontaneously. Eggs are stationary and do not have the ability to move on their own.
However, they can be moved by external forces such as water currents or by organisms that come in contact with them. Once fertilized, the embryo within the egg may exhibit motility as it develops and begins to move and grow, but the egg itself is not motile.
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Meiosis increases genetic variability as it produces gametes for sexual reproduction.
The process of meiosis increases genetic variability as it produces gametes for sexual reproduction. Meiosis is a type of cell division that results in four daughter cells with half the number of chromosomes as the parent cell. During meiosis, genetic recombination and crossing over occur, leading to the production of genetically diverse gametes.
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B. natural selection
C. selective breeding
D. inheritance of acquired characteristics
What observation did Darwin make that suggested there had been geological changes in Earth's history?
A. giant tortoises
B. fossils of giant sloths
C. fossil shells on top of mountains
D. an absence of rabbits in South America
Answer 1 : D) Inheritance of acquired characteristics
Jean-Baptiste Lamarck propose a mechanism by which gradual change of species may occur.
According to him the traits an organism gained during its lifetime could be passed to its offspring.
Example: If a giraffe stretched its neck gradually by stretching to reach leaves for many years, Lamarck believed the offspring may have longer necks.
Answer 2: A) Giant Tortoises
Charles Darwin visited Galapagos Islands in 1835. During his visit he observed that different species were in a constant battle for survival with each other, and because of that battle there was a variation in the tortoise that live on the sand and those that live in the water.
The right answer is Animal tissue.
Secondary producers are heterotrophic beings, essentially animals and fungi whose role is to circulate the matter and energy stored in the biomass of primary producers.
To a large extent, it can be considered that the sphere of decomposers and mainly saprophytic bacteria of the mineralization belongs to the secondary producers.