Answer:
A
Explanation:
The number of different species in a particular habitat is what is what makes up the biodiversity in such habitat. The more varied the species are, the higher the biodiversity.
There are factors that could lead to a decline in the biodiversity level of an habitat which is illustrated by the two graphs above. One of such factors is over exploration of a forest.
The graph shows that as consumption of lumber increases at a faster rate compared to how forest is replenished, the amount of lumber available for supply also reduces. As this goes on, biodiversity keeps declining.
In summary, we can say that:
"When forests are cut down faster than they can be replenished, biodiversity quickly decreases."
Answer:
My heartbeat would get slower because i am stopping the blood from getting to my heart which makes my heart beat
Explanation:
<span>One test might be the acid content of the water. Water that does not have a neutral pH might be less conducive to life. Another water quality test might be oxygen levels in the water. Inadequate oxygen levels may also reduce the amount of aquatic life. The presence of pollutants might be a third test. Chemicals that poison the water would negatively impact the number and variety of organisms present.</span>
Gametes and female gametes joining, during fertilization, to produce a zygote and then an embryo. Most plants produce both male and female gametes, while some produce one or the other. Pollen contains the male gametes and is found on the stamen. Ovules contain the female gametes and are found in the pistil.
Answer:
I believe the options are:
1) Present day species developed from earlier species
.
2) Some species die out when environmental changes occur
.
3) Complex organism develop from simple organisms over time
.
4) Change occurs according to the needs of an individual.
The answer is 4) Change occurs according to the needs of an individual.
Explanation:
Theory of Evolution:
- By definition, evolution is the process of change in an individual's/organism's characteristics over time. Evolution occurs through mutations in the genetic information or DNA of an individual.
- The theory of evolution states that all organisms change over time and are descendants of a single common ancestor. Species adapt to the changing environment by introducing variations in their DNA over millions of years. Harsh environment conditions eliminate organisms that cannot adapt to the changing environment and only the fittest survive. This is called natural selection.
- This process, occurring over millions of years, results in the formation of an entirely new species.
- The theory of evolution is contrary to the concept of Lamarckism or inheritance of acquired characters which states that characters that an organism acquires during its lifetime can be passed on to its offspring.
