Answer:
Energy flow through ecosystems begins with producers. Chemical energy flow begins with consumers who obtain chemical energy by feeding on producers.
Explanation:
Prophase is the first phase is when the two sister chromatids pair up and the nucleoli disappears. Prometaphase is the second phase where the microtubules begin to separate from each other, each pair of microtubules attach to the kinetochores and some nonkinetohore microtubules interact with those from the opposite pole of the spindle. Metaphase is the third phase where the chromosomes are lined up on the invisible line of the metaphase plate. Anaphase is the fourth phase where the two daughter chromosomes begin to separate from each other to opposite poles. Telophase is the last phase where the two daughter nuclei form creating two identical nuclei.
Answer:
Recent studies have shown that dark skin colour was developed in the past for protection against cancer. Scientists claim that in the past natural selection favoured humans having dark colour as compared to humans having a fair colour. This is because humans having a darker colour produced more melanin which protected them from ultraviolet radiation. As a result, this skin colour protected more against skin cancer. Hence, Having a darker skin colour protected in survival and reproduction to people thousands of years ago.
It is said that the materials found in the giant cloud that formed our solar system are comparable to the ones we have in the solar system today, which are Hydrogen and Helium!
Answer:
C. Niche overlap is small and the carrying capacities are similar.
Explanation:
The Lotka-Volterra model is used to predicts if coexistence of two species is possible .The Lotka–Volterra models show that coexistence is more likely if niche overlap is small and the carrying capacities are similar.
