Answer:
c. the formation of bone from within fibrous membranes
Explanation:
On the basis of formation ossification process is divided into two types:
1) Endochondral ossification : The process by which bone is formed from haline cartilage.
2) Intramembranous ossification : The process by which bone is formed by replacing a fibrous membrane and not from cartilage. This type of ossification occurs as follows :
- An ossification center appears in the fibrous connective tissue membrane.
- Bone matrix is secreted within fibrous membrane
- Woven bone and periosteum forms.
- Bone collar of compact bone forms and red marrow appears.
Hence option c. the formation of bone from within fibrous membranes is the right option
There are many environmental negative direct outcomes of unused excess nitrogen from nitrogenous fertilizers. One of these is eutrophication. Eutrophication is the excessive richness of nutrients in a water body as a result of fertilizer run offs from the land, which causes a dense growth of plants in the water. Other negative outcomes are: green house effects, acid rain and contamination of underground water which has negative effects on human health.
18% of 400 is 72
Hope it helped
Answer:
DNA helicase
Explanation:
DNA helicase unwinds the DNA strands by breaking the hydrogen bonds down at the center of the strand. this process begins in the replication fork of the DNA strand
Answer:
Succession is the natural evolution that occurs in an ecosystem by its own internal dynamics, that is, it refers to two stages of something that is (precisely) successive in time.
Explanation:
Genetic diversity occurs at various levels of the organization of the ecosystem, through the species that compose it, from its subspecific populations (provenances), family groups and individual genotypes, down to the molecular level of the gene. A succession consists of the process of change that an ecosystem undergoes over time, as a consequence of changes that occur both in the conditions of the environment and in the populations that comprise it, giving rise to an increasingly organized and complex ecosystem. The effects of a succession are the change in the structure and dynamics of an ecosystem over time, as a result of an interaction of physical forces that break in from the outside and development processes generated within the system. Also when the classes of ecological changes are controlled by the community, changes will occur in the physical substrate and the microclimate, altering the composition of species and diversity as a result of competition and other interactions of the populations. Species diversity tends to increase with succession, the species undergo mutations or transformations, given that the soil, air and even water (abiotic factors) have also undergone important transformations during the succession.
