Answer:
Oceanic crust is denser than continental crust. At a subduction zone, the oceanic crust usually sinks into the mantle beneath lighter continental crust. (Sometimes, oceanic crust may grow so old and that dense that it collapses and spontaneously forms a subduction zone, scientists think.)
Explanation:
Answer:
Cell-mediated immunity develops through a network of interactions that results in defense against microorganisms that survive within phagocytes or other cells. The response is initiated by the recognition of intracellular microorganism antigen by T cells through the histocompatibility complex. In the CD8 response, only the target cell carrying the class I associated antigen can be lysed or induced to apoptosis. In another mechanism of the cellular response, CD4 + Th1 T cells activate, for example, cytokine-infected macrophages such as IFN. When a pathogen resists the effects of activated macrophages, chronic infection may develop.
The hormonal immunity response leads to the destruction of extracellular microorganisms and prevents or decreases the spread of intracellular cells by neutralizing, opsonizing and activating the complement system.
Complete Question:
The carrying capacity of the environment for a species is determined by:
options:
(a) the reproductive rate of the organism.
(b) the number of organisms of that species.
(c) the state and national wildlife laws pertaining to that species.
(d) the age distribution of that species.
(e) the limited availability of renewable resources in the environment and the environmental resistance to the biotic potential of the organism.
Answer: (e) the limited availability of renewable resources in the environment and the environmental resistance to the biotic potential of the organism.
Explanation: The carrying capacity refers to the highest number of the species that the environment can cater for, in terms of food, space and other necessities that supports life.
Thus, the available of renewable resources (i.e resources that can be reused after consumption e.g water) in the environment, plays as a determinant of the highest number of individuals an environment can support (carrying capacity).
Furthermore, environmental resistance to the biotic potential of the organism, is also a determinant of the carrying capacity of organisms inhabiting that particular environment.
The answer is to your question is A
Answer:
Translocation
Explanation:
Translocation is a chromosomal defect in which part of a chromosome breaks off and reattaches backward on the same chromosome.
Translocation can happen due to many reasons like:
A) Some of the changes that arise around the time of conception or production of sperm or egg.
B) The inheritance of altered chromosome from father or mother.
Translocations can be divided into two forms:
- Reciprocal translocation
- Robertsonian translocation.
In reciprocal translocations, fragments of two chromosomes break off from two different places, break and swap each other's segments. While in Robertsonian translocation one chromosome attached with other.
Hope it help!
