The human populations are not limited by the carrying capacity of their ecosystems, and they are the only species on Earth that are able to perform such a thing. The main reason for this is that the humans are able to transport resources of all sorts and for all needs from very distant places. Even if there's a very large population surrounded by desert, the humans are still able to survive by simply bringing in the necessary things from other places throughout he means of transportation. Another reason is that the humans are able to change and manipulate their environment to certain extent, being able to provide for themselves even in ecosystems that naturally are nowhere near close to provide those things for them.
After fertilization of the ovule, the megaspore develops into the food supply of the mature seed.
After fertilization of the ovule, the <em />integument develops into the seed coat.
After fertilization of the ovule, the fertilized egg develops into the embryo of the mature seed.
The ovule contains the female reproductive cells of the seed plants and when fertilized, it produces the seed. Ovules contain megasporocytes, cells that produce megaspores through cell division. An integument is a layer that protects and surrounds the ovule. After fertilization, the integument protects and surrounds the seed. After fertilization, the ovule contains a diploid zygote which develops into an embryo.
The answer is D.
Tertiary consumers eat primary and secondary consumers. Therefore, carnivores that eat other carnivores are called tertiary consumers. An example of primary consumers are rabbits and giraffes. An example of secondary consumers are snakes and rats.
The study of EARTH SCIENCE involves the study of the natural world.
Earth science is a branch of science which deals with the study of physical components of the earth and its atmosphere. Earth science as a subject is divided into many branches such as geology, astronomy, meteorology, oceanography, etc. The study of earth science is targeted at understanding the present characteristics and the past evolution of the earth.
