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Rudik [331]
2 years ago
11

An astronomer observes the light of a galaxy that is 600 million light-years away. How old is the light?

Biology
1 answer:
Triss [41]2 years ago
7 0
<h2>600 million years old.</h2>

Explanation:

<em><u>Ain't</u></em><em><u> </u></em><em><u>sure:</u></em><em><u>)</u></em>

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What modern day practice helps prevent an inadequate production of thyroid hormones?
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Iodized salts helps to prevent an inadequate production of thyroid hormones .

<h3>What is iodized salts ?</h3>

Iodized salt is a table salt . it is a mixture of very little amount of sodium iodide and potassium iodide .

It helps to prevent iodine deficiency .

It is a micronutrient and dietary mineral that is naturally present in the food supply .and also it is a heavy element .generally found near sea coasts .

Iodine deficiency disease includes hypothyroidism .

<h3>What is hypothyroidism ?</h3>

It occurs due to less secretion of thyroid hormone caused by iodine deficiency .it causes stunted growth . it shows low rate of metabolism .

Hypothyroidism includes diseases like myxoedema or gull's disease , cretinism .

Inadequate supply of iodine in diet causes enlargement of the gland known as simple goitre.

<h3>Thyroid hormones :</h3>

It is secreted by endocrine glands known as thyroid gland . it includes two types of hormones known as thyroxine and calcitonin .

Thyroxine is an iodine containing hormone known as tetra-iodothyroxine(80%) and tri-iodothyroxine (20%).

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4 0
1 year ago
What are the instructions on a chromosome called
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The instructions on a chromosome are called-DNA

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7 0
3 years ago
2. A fruit fly is classified as a consumer rather than as a producer because it is unable to 1. reproduce asexually 2. synthesiz
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Answer:

2. synthesize its own food

Explanation:

Based on how they obtain their nutrition, living organisms has been classified to be either producers, consumers, or decomposers. Producers are organisms capable of synthesizing their own food using light (photosynthesis) or inorganic chemicals (chemosynthesis).

Consumers, on the other hand, cannot synthesize their own food and hence, rely on other organisms to obtain their energy source. Consumers feed on other organisms to obtain energy. In this question, a fruit fly is classified as a CONSUMER because it cannot synthesize its own food.

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