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Anastaziya [24]
3 years ago
11

Vitamin D precursors are produced in the skin in the presence of sunlight. These chemicals are important for the transport of so

dium in our intestines. Vitamin D precursors are produced in the skin in the presence of sunlight. These chemicals are important for the transport of sodium in our intestines. True False
Biology
1 answer:
denpristay [2]3 years ago
7 0

Answer:

False.

Explanation:

Vitamin D is very important for our body because it helps absorb, transport and fix calcium rather than sodium, as the question above says. In addition, this vitamin prevents disease and promotes bone maintenance. In order for her to perform her duties, one usually has to expose oneself to the sun.

One of the tips to find out if your body is missing this vitamin is to look at the skin. The sun is responsible for synthesizing vitamin D in the body. So if your skin is darker it is a sign of deficiency as pigment protects the skin and prevents absorption.

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What chemical caused the decline of the eagle population
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The chemical that caused decline of the eagle population is pesticide DDT
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Which sentence describes how an animal might interact with the abiotic factors in its environment?
alexandr1967 [171]

Answer:

It inhales oxygen

Explanation:

6 0
3 years ago
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Calculate the genotypic and phenotypic ratios for the following crosses in peas for height, determined by the T gene. (T is Tall
REY [17]
1. G= 0:4:0
P= 4:0
2. G= 2:2:0
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Hope this helps :)

5 0
1 year ago
Layers of sediment are usually deposited by?
Bogdan [553]
I would say c is the answer

6 0
3 years ago
What could a scientist do to determine what era the Eocene Period belongs to on the geologic time scale?
Burka [1]

Answer:

Option B) study information related to the Cenozoic era

Explanation:

The complete question is

Scientists discovered that the Eocene time period existed in Earths history around 34 MYA. What do they need to do to determine what time period Eocene belongs to on the geologic time scale?

A) learn what happened during Precambrian time

B) study information related to the Cenozoic era

C) view the timing of events in the Mesozoic era

D) research events that happened during the Paleozoic era

Solution -

The period of Eocene belong to the Cenozoic era. The Cenozoic era is divided into three periods-  

a) The Paleogene – Existed between 65.5 to 23.03 million years ago

b) The Neogene - Existed between 23.03 to 2.6 million years ago

c) The Quaternary – Started some 2.6 million years ago and is continuing till present

The Paleogene is subdivided into three epochs –  

A) The Paleocene – existed between 65.5 to 55.8 million years ago

B) The Eocene – existed between 55.8 to 33.9 million years ago and  

C) The Oligocene – existed between 33.9 to 23.03 million years ago

Hence, studying about Cenozoic era will give information about the Eocene epoch

Hence, option B is correct

5 0
3 years ago
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