Meiosis creates gametes (eggs and sperm) with only a single chromosome set (haploid or n) from parental cells with two chromosome sets (diploid or 2n). During fertilization, the haploid sperm (n) and egg (n) fuse, producing a diploid zygote (2n). The cells of the zygote then divide by mitosis (which does not change the ploidy level) to produce an adult organism (still 2n) of the next generation.
<span>In sexual life cycles, meiosis and fertilization keep the number of chromosomes constant from generation to generation. </span>
Nothing remains the same and habitats are constantly changing. There are two main types of succession, primary and secondary.
The correct answers are:
B) Predation;
C) Decomposition;
The fungi are found in many different forms, and they practice numerous styles of life. The fungi can be considered as organisms that are decomposing. They are actually the main living organisms that take advantage of the decomposing organisms, but they too find themselves in a situation where they decompose once their life is over. Also, some fungi, around 150 species from what is known so far, are actually predators. They are feeding on nematode worms. They have developed ways to trap the worms, or just simply snag them with an adhesive that sticks to them.
The fungi though can not be considered as autotrophs. The reason for that is that they are not producers, but instead they use the producers as food source, thus making them heterotrophs.
<span> Just follow the rock cycle.
(1) Rock is broken down
(2) Regolith is eroded/transported
(3) Regolith is dumped
(4) Layers begin to compact
(5) Sedimentary rock is buried and turned into metamorphic rock
(6) Metamorphic rock melts to magma
(7) Magma resurfaces as igneous rock </span>
