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Studentka2010 [4]
3 years ago
5

How do scientists explain the discovery of crinoids in the Wasatch Mountains?

Biology
1 answer:
Nostrana [21]3 years ago
6 0
<span>The mountains were once seas. The land was forced up by tectonic motion when the mountains were formed. The Sahara also used to be a sea and has a valley full of the fossilized remains of an extinct species of whale. It is generally agreed upon that two plates colliding caused the uplift that created the mountainous zone. Same for the Himalayas.</span>
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A laboratory experiment followed the growth of a flour beetle (Tribolium sp.) population over time. At first, the population inc
Serhud [2]

Answer:

Explanation:

Cannibalism is a very essential factor regulating population dynamics of four beetle. After some days of feeding, the flour becomes conditioned by the beetles which can affect rate of cannibalism

Adults have a relatively lower rate of cannibalism. While its highest rate of cannibalism is at larvae stage

Flour conditioning is caused by the accumulation of feces, pheromones and ethylquinone- thus is repellent produced by the beetles.

5 0
4 years ago
What organs are being affected from dwarfism???? And how????
Alexandra [31]

Pituitary dwarfism is caused by problems arising from the pituitary gland. The pituitary gland, also called the hypophysis, is a gland at the base of the brain that produces many different hormones. This gland is divided into the anterior (front) and posterior (back) halves. The anterior pituitary produces six hormones: growth hormone, adrenocorticotropin (corticotropin), thyroid stimulating hormone (thyrotropin), prolactin, follicle stimulating hormone, and lutenizing hormone. The posterior pituitary gland only produces two hormones: antidiuretic hormone (vasopressin) and oxytocin.

The growth process begins in the lower part of the forebrain in a small organ called the hypothalamus. The hypothalamus releases hormones that regulate the production of other hormones. When the hypothalamus releases growth hormone-releasing hormone (GHRH), the anterior pituitary is stimulated to release growth hormone (GH). Growth hormone then acts on the liver and other tissues and stimulates them to secrete insulin-like growth factor-1 (IGF-1). IGF-1 directly promotes the development of bone and muscle, causing bones to grow in length, and muscles to increase protein synthesis (make more protein).

Since growth is a complex phenomenon, it may be slowed down or stopped by abnormalities arising at any point in the process. Thus, dwarfism can result if there is a deficiency in any of these hormones, if there is a failure in the receptor cells receiving the hormonal stimuli, or if the target cells are unable to respond.

At its most basic, pituitary dwarfism results from decreased production of hormones by the anterior pituitary. When none of the hormones of the anterior pituitary are adequately produced, this is called panhypopituitarism. A common form of pituitary dwarfism is due to deficiencies in the production of growth hormone (GH). When less GH than normal is produced during childhood, an individual's arms, legs, and other structures continue to develop in normal proportions, but at a decreased rate.

<span>

hopre i helped</span>
7 0
3 years ago
The Chesapeake Bay is an important natural resource. Over the years, the number of oysters in the bay has declined dramatically,
valkas [14]

Answer:

True

Explanation:

The Chesapeake Bay is an example of an estuary that is located in the United States. It is a source of edible marine creatures such as oysters, crabs, prawns e.t.c

Over the years, non - sustainable harvesting of oysters by farmers have been happening at Chesapeake bay, resulting in a reduction in the amount of oysters present.

8 0
3 years ago
A diploid species has 2n=52 chromosomes. If you found a monopsony in a member of this species how many chromosomes would you hav
Lerok [7]
26 as 52/2 =26

<span>I hope this helps!</span>
4 0
3 years ago
Has anyone done this yet ? I need help
Mariana [72]

Answer:

A cube's surface area formula is SA = 6s^2 (s is the length of one of the sides.)

A cube's volume formula is V=a^3

The answer should be 216 for both equations.

Explanation:

Hope this helps. :)

4 0
3 years ago
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