Answer:
Explanation:
The rate of pollination in the field (near the pond with no fish) will decrease exponentially. Because, as the fish population is removed from that ecosystem, the population of dragonflies and larva increases without check because, fish feeds on the dragonflies larva and kept there population in check. Due to this, the population of bees and other pollinators population decline becuase, they are major food source of dragonflies.
Honeybees are the keystone species because it's absence will lead to major changes in the ecosystem.
Answer:
B) slow- twitch, intermediate- twitch, fast-twitch
Explanation:
The three types of muscle fibers are:
- <u>Slow-twitch: </u>they are also called Red Fibers because of their color or type I. These type of fibers are resistant to fatigue, that means that they can contract for long periods, but its contraction is not very strong. Muscles that maintain our posture, such as our back muscles, have a predominancy of these types of fibers.
- <u>Fast-twitch fibers</u>: they are also called type II, or White Fibers because of their color due to the low supply of blood. They are fibers that contract very fast and are not resistant to fatigue. These types of fibers can generate higher amounts of force in a short period, but their contraction is for a short period. They are present in our eye's muscles.
- <u>Intermediate twitch fibers:</u> they characteristics are between the two types of fibers mentioned above. That is to say, that they do not contract as fast as fast-twitch fibers do but not as slow as slow fibers either, also, they fatigue quickly but nos as quicky as fast-twitch fibers or as slow as slow-twitch. They are in the majority of our muscles.
Cloning is bad because
It is bad for animals
It can cause defects
It can cause possible radiation.
Genetic enginering is bad because
It can cause cancer
It can cause antibiotic resistance
It can produce new toxins
Artificial selection is bad because
There can be unanticipated consequences of encouraging a specific trait.
It lessens the amount of variation that exists in a gene pool.
The quality of life is often reduced through artificial selection.
Explanation:
Dinosaurs are living organisms that depends on the environment for survival. As the asteroid hits the Yucatan Peninsula area about 65million years a couple of things can happen:
- Frictional heating of the surface as the earth collided with the asteroid. This heating will cause surface temperature to rise globally and can induce the phenomenon of global warming. This can lead to release of water from reservoirs on the earth surface and hence flooding.
- The impact can lead to increase in surface pressure beyond normal and that which life has adjusted to.
- Debris in form of dust will be released into the atmosphere and a global air pollution will occur. Gases useful for life will be highly polluted by the vast amount of dusts and other particles discharged into the atmosphere.
All these factors will eventually have a prolonged effect that combine to force dinosaurs into extinction.
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Ocean water is a good example of their sources