Answer:
troposphere - Responsible for earth's weather
exosphere - Air mergers into space
ionosphere - Used to send radio signals
stratosphere - Characterized by strong, steady winds
ozone layer - Protects earth from UV radiation
mesosphere - coldest layer
Explanation:
Abstract noun
The type of noun that cannot be perceived by the senses is abstract noun.
Abstract nouns are nouns that cannot be perceived with the five senses. Abstract noun describes things that cannot be touched, seen, heard, tasted, or smell. Abstract noun include feelings, ideas, concepts, aspect, and qualities. Common examples of abstract noun include anger, bravery, calm, peace, love, trust, and progress.
Answer:
I. The nuclear membrane breaks up.
II. Sister chromatids condense.
III. Sister chromatids align on the metaphase plate.
IV. The cleavage furrow forms.
V. Sister chromatids separate.
Explanation:
Mitosis is divided into 5 stages:
- Prophase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
The prophase stage is marked by two main events
- <em>Dissolution or breakage of nuclear membrane</em>
- <em>Condensation of genetic materials</em>
Metaphase is marked by
- <em>Alignment of chromosomes (made up of two sister chromatids) on the metaphase plate</em>
- <em>Attachment of spindles to aligned chromosomes at the centromere</em>
Anaphase is marked by
- <em>Initiation of cleavage furrow formation</em>
- <em>Shortening of spindle fibers results in the separation of sister chromatids</em>
- <em>Sister chromatids begin migrating to opposite poles</em>
Telophase
- <em>Chromatids completes their migration to the poles</em>
Cytokinesis
- <em>Nuclear membrane reforms</em>
- <em>Sister chromatids decondense</em>
- <em>Cytoplasm divides</em>
Answer: Symbiosis is a close relationship between two species in which at least one species benefits. There are three types of symbiotic relationship, which are; Mutualism, Commensalism and Parasitism.
Explanation:
Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed. Example, a tick (parasite) living on a livestock (host).