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Westkost [7]
3 years ago
6

Edit: Nevermind! I figured it out!!

Biology
2 answers:
Montano1993 [528]3 years ago
5 0

Answer:

meteorite 1- 2.6 billion

meteorite 2- 5.2 billion

meteorite 3- 3.9 billion

navik [9.2K]3 years ago
5 0

Answer:

Use your calculations to answer the questions.

How old is meteorite 1?

<h2>✔ 2.6 billion years</h2>

How old is meteorite 2?

<h2>✔ 5.2 billion years</h2>

How old is meteorite 3?

<h2>✔ 3.9 billion years</h2>

<h2>edgunuity!</h2>

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Transport issue of vascular plants are the and ?
s344n2d4d5 [400]

The directed movement of substances, into, out of or within a cell, either in a vascular tissue or in the vascular membrane.

The main roles of plant stems and roots are to transport substances around the plant. They have two types of transport systems – xylem and phloem . Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.

hope it helps because there is not any issue of transport , and if my answer i s not supportable comment i will provid emore information.

7 0
2 years ago
Which hormone is secreted during periods of stress and is related to increased risk of disease?
gulaghasi [49]

Stress is a condition that tends to disturb the equilibrium of the individual with the environment. There are hormonal changes which occur during stress and have their impact in the endocrine system.

Reaction to stress is associated with increased hormone secretions of several hormones such as glucocorticoids, growth hormone, prolactin and catecholamine. The elevated levels of these hormones increase the risk of infections and also decrease the innate immunity as well as increase the autoimmune responses.

There are endocrine disorders related with the increased hormone secretion during stress conditions such as psychosexual dwarfism, obesity, Grave’s disease and gonadal dysfunction. The effect of increased secretion of the hormones is increase in mobilization of energy and adaption of the individual to current circumstances.

Activation of the pituitary adrenal axis is an important and dominant response due to stress. On stimulation of the pituitary adrenal axis results in hypothalamic secretion of the CRF (corticotrophin-releasing factor) which further stimulates the pituitary to ACTH, 3-endorphin and 8-lipotropin.

During stress, the plasma levels of these hormones increase up to five times.

The stimulation of the pituitary adrenal axis is also associated with the release of hormone catecholamine. The increased level of catecholamine leads to increased skeletal muscle flow of blood increased cardiac output and glucose levels, bronchiolar dilation, cutaneous vasoconstriction etc.

Acute stress releases vasopressin rapidly from the Para ventricular nucleus of hypothalamus together with corticotrophin releasing hormone.

During stress there is also suppression of gonadotropins and gonadal steroidal hormones which disrupt the normal menstrual cycle and prolonged stress can also lead to impairment of reproductive functions.

Thyroid functions are down regulated during stress conditions. T3 and T4 levels decrease whenever there is any stress condition.

The growth hormone level increases due to physical stress and prolactin level may increase or decrease depending on the conditions of regulatory environment locally.

4 0
3 years ago
During mitosis, the centromere is a region in which Group of answer choices
Butoxors [25]

Answer:

Option 3, Chromatids remain attached to one another until anaphase

Explanation:

Centromere lies at the center, end or other points of the chromosome and joins the two sister chromatids. During cell division, the spindle fibers attaches at the centromere and detaches the chromosomes during the anaphase of the cell division to ensure that each daughter cell gets equal number of chromosomes at the end of mitosis. Centromere plays an essential role in the separation of chromosomes.

Hence, option 3 is correct

4 0
3 years ago
Need help<br> need to ask more questions
MrRissso [65]

The conclusion that can be draw from the data above concerning the carnivores and the herbivores is that the carnivores have shorter digestive system than the herbivores. That is option C.

<h3>What are carnivores and herbivores?</h3>

The carnivores are those animals that kill and feed on other smaller animals as their source of food while the herbivores are the animals that feed on plant and plant products.

From the data given above, the herbivores have longer digestive system but are less heavy in weight as when compared with the carnivores.

Also from the data given above, the carnivores have a shorter digestive system but with more weight than the herbivores.

Learn more about carnivores here:

brainly.com/question/24841795

#SPJ1

3 0
1 year ago
What characteristic of water accounts for its properties of adhesion, cohesion, high specific heat, and nature as a solvent
KIM [24]
It has hydrogen bonds

7 0
3 years ago
Read 2 more answers
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