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2 years ago

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called _____.

1 answer:

3 0

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the lithosphere.

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how do levels of thermal energy and speed differ between low and high friction surfaces? how does this difference relate to a tr

MariettaO [177]

- "This energy is usually in the form of low-level thermal energy. It is only possible to extract work when there is a temperature difference, so low-level thermal velocity; this means that the force of friction and the applied force are equal in magnitude."

- "An energy transformation is the change of energy from one form to another. Energy transformations occur everywhere every second of the day. There are many different forms of energy such as electrical, thermal, nuclear, mechanical, electromagnetic, sound, and chemical."

5 0

3 years ago

Read 2 more answers

Rabbits, turtles, fish, humans, and whales all share certain characteristics but also differ from each other. All of these speci

Delvig [45]

The levels of organisation are

Domain: Eukarya

Kingdom Animalia

Phylum :Chordata

Explanation:

They all share these levels of organisation because;

for the Domain Eukarya, they have;

→multi-cellular cells containing nucleus; and other membrane bound organelle.e.g Mitochondrial.

→their DNA located in the nucleus packaged as linear chromosomes bounded by histone proteins.

→mode of reproduction which is sexual.

They share Kingdom Animalia because;

→they have multi-cellular, specialised cells, bounded by plasma membranes.

→they have specialized tissues, organs, and system.

→they all undergo heterotrophic mode of nutrition as evident in the question 'that they must consume plants and animals as source of energy'

→they exchanged communication by nervous ssytem and 

→ use homeostatic mechanisms to regulate water balance of the body through the kidney.

→Humans,Rabbits,and whales are VIVIPAROUS; they give birth to young ones alive.

→Most fishes lay eggs to reproduce, they are said to be Ovoviviparous.

They belong to phylum Chordata because ;

→they all have noto chord; which serve as template for axial skeleton.

dorsal hollow nerve cord -template for the brain and spinal cord

→pharyngeal slits- templates for gill aches in bony fishes and components of inner ear in land animals.

→ tail length varies in these organisms.

8 0

3 years ago

*by my profile its actually not biology cause it didn'*t have science subject*

LuckyWell [14K]

Answer:

A. When two tectonic plates start to push into each other they can rise up and build mountains, or sink under and create deep valleys.

Explanation:

It is true

5 0

3 years ago

What hypothesis did Miller-Urey test in their experiment?

coldgirl [10]

Organic molecules can form in a reducing atmosphere. Good luck.

4 0

3 years ago

Read 2 more answers

Arrange the following in the proper order in which they occur during clonal selection. 1. Helper T cells are activated. 2. Macro

liubo4ka [24]

Answer:

1) Macrophages ingest antigen 2) Helper T cells are activated 3) B cells differentiate into plasma cells and memory cells.

Explanation:

Innate immunity and adaptive immunity provide protection against foreign invaders. Innate immunity is non specific and adaptive immunity is specific immune response; includes the production of antibody after a sequence of events.

When an antigen enters the body the phagocytic cells such as macrophages and dendritic cells ingest the antigen by a process called as phagocytosis. These cells act as antigen presenting cells and present it to T cells.
T cells are of two types T helper cells and T cytotoxic cell. T cytotoxic cells killed the affected cell such as affected by virus while T helper cells signal for the production antibodies.
Antibodies are produced from the plasma cells while memory cells act as record keeping. The plasma cells are stimulated by interleukins.

8 0

3 years ago