Answer: Species stay the same for a long time and then
change quickly due to environmental changes.
A punctuated equilibrium theory
states that
individual species tend to stay the same or no change over a long period of
time and then enter a period of rapid change due to environmental changes,
which gives rise to new species. Moreover, it generally applies to sexually
reproducing organisms but other biologists have applied the model to non-sexual
species like virus.
Answer:
In mosses gamete are produced by MITOSIS; In ferns gametes are produced by MITOSIS.
Explanation:
Ferns usually grow way bigger than mosses and they are both primitive plants. In ferns the gametes, sperm and eggs are formed by mitosis when there is a suitable place for development.
Nuclear fuel is used to create energy by heating water that creates steam that then turns turbine generators that produce electricity. This process is conducted in large facilities capable of accommodating the heat and steam that is created in such a process.
Answer:
Compazine belongs to a class of drugs called Antiemetic Agents; Antipsychotics, Phenothiazine.
Answer:
Answer is A. allow them to control all the variables involved.
Explanation:
Modelling in ecology means the use of constructed mathematical models for understanding of ecological processes and to predict or know how real it is for ecosystem to change.
Ecological modelling is useful in defining problems more precisely and clarity of concepts.