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Nady [450]
3 years ago
8

Explain how current and oxygen content affect the biodiversity of streams and rivers

Biology
1 answer:
Eddi Din [679]3 years ago
8 0

Answer: The oxygen content at the source of the streams or rivers is higher as compared to the mouth of the river. Consequently, the organisms which require more oxygen tend to find at the source of the rivers whereas the organisms which require less oxygen tend to find at the mouth of the river.

Explanation:

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Which structure is a sealed capsule of clear fluid that focuses light to the back of the eye? A. cornea B. iris C. lens D. retin
sasho [114]
The correct answer is C. lens. Lens is a convex sealed capsule containing a clear fluid and focuses light to the back of the eye. Iris is the colored part of the eye that contracts and expands under influence of ciliary muscle. Retina is the inner surface of back of eye. Cornea is a transparent and curved surface of eye that helps to focus light.
3 0
3 years ago
Structural proteins that typically assemble into large cables or threads, to provide mechanical support to cells or organisms ar
ollegr [7]

Answer:

Fibrous

Explanation:

Proteins are assembled according to their functions. Fibrous proteins usually provide protection and support to cells. They are made up of polypeptides that have elongated shape and assembles in large cables or threads. These proteins are differentiated from globular proteins by their globular form and repeated units of amino acids.

For example the fibrous proteins involved in horns, hair and nails is alpha-keratin.  Elastin found in skin and ligament is also a fibrous protein. Collagen includes collagen fibrils that have tensile strength of steel is also a fibrous protein found in cartilages and bones.

7 0
3 years ago
Which part of the brain is associated with conscious thought
hichkok12 [17]

Answer:

Cerebral cortex of the Cerebrum

Explanation:

The body directs our body's internal functions. These functions are made possible by four major regions of the brain viz: The Cerebrum, Diencephalon, Cerebellum and Brain stem.

The Cerebrum is the largest brain structure, making up most of the total brain, and a part of the forebrain. The cerebrum's prominent outer portion, the cerebral cortex, not only processes sensory and motor information but also enables CONSCIOUSNESS (our ability to consider ourselves and the outside world), thoughts, emotion, reasoning and memory.

The cerebral cortex is composed of the right and left hemispheres joined by the corpus callosum. Each cerebral hemisphere can be subdivided into four lobes (Frontal, Parietal, Temporal, and Occipital) associated with different functions.

4 0
3 years ago
How do fossils of extinct species provide evidence of how life on earth has changed?
Snowcat [4.5K]
They show how all creatures have adapted such as giant dinosaurs are now tiny lizards =D<span />
8 0
3 years ago
One common test of language lateralization is invasive; it involves injecting ____________ into the carotid artery.
vova2212 [387]

Answer:

barbiturate/sedatives

Explanation:

Lateralization is a process of studying the split functions of the brain hemispheres. The most common test used for testing lateralization is obtained from sodium amytal studies. In this study a barbiturate or a sedative is injected into the carotid artery either left or the right artery. So, till the time the barbiturate hampers the functioning of any hemisphere, the functions associated with that hemisphere also gets hampered or are sustained for a while. This technique is of invasive nature

4 0
3 years ago
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