Answer:
Internal Fertilization: Mammals,birds and reptiles in them the mode of fertilization is internal
External Fertilization: Amphibians and fishes used external fertilization.
Egg laying Animals;Birds,reptiles and some mammals platypus lays eggs.
Explanation:
Fertilization is a process in which a female egg (Ovum) and male egg (sperm) unite to form a zygote.A zygote is a fertilized egg which grows within an embryo.The process of fertilization is important in eukaryotes such as animals, humans,birds and plants. Fertilization divides a cell into many daughter cells by the process of mitosis and meiosis.It doubles the chromosome numbers.Fertilization are of two types internal and external.
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The 4 major earth science fields are:
Geology: It Is the Study of the composition and internal structure of the planet. A Geologist would examine the earthquakes.
Oceanology: It is the Study of the seas and oceans, and everything related to it. An Oceanologist would examine the large waves to shore and the major flooding.
Meteorology: It is the study of the dynamics of the atmosphere of the Earth. A Meteorologist would study the cooler weather.
Astronomy: It is the study of the celestial bodies of the Universe. An astronomer would examine the meteor impact by itself.
Answer: Biofilms have great importance for public health because of their role in certain infectious diseases and importance in a variety of device-related infections.
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