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Zina [86]
4 years ago
13

Gems called rubies are used in lasers. Please select the best answer from the choices provided

Biology
1 answer:
NISA [10]4 years ago
8 0
????????????????????? How are we meant to answer this
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When Earth moves around the sun, there are small variations in the position of a star as observed from Earth. Which of these is
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<span>The answer should be The Parallax Method.</span>
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3 years ago
bryologist (a scientist that studies mosses, and their allies) gives a lecture to your biology class. In her lecture, she makes
Novosadov [1.4K]

Fern spore germinates into prothallus.

Explanation:

Ferns are members of phylum pteridophyta, the vascular cryptogams.

These are first land plants which are known to have a distinct conducting system of xylem and phloem.

They reproduce by forming spores that germinates into a heart shaped gametophyte.

The gametophyte of the fern is called prothallus.

The heart shaped gametophyte has root like structure called rhizoids.

These rhizoids anchor the gametophyte to the substratum.

4 0
3 years ago
Jakie są substancje uzależniające skutki jej stosowania powstałe choroby skutki dla najbliszszych
sineoko [7]

Answer: Gdy uzależnienie od alkoholu lub narkotyków się utrzyma, staje się priorytetem w życiu człowieka. Gdybyście byli uzależnieni, spędzilibyście więcej czasu i pieniędzy na nabywaniu i używaniu narkotyków.

Explanation:

5 0
4 years ago
A region of the earth's surface with a specific climate where only certain types of plants and animals live.
NISA [10]
I think the answer is D but i could be wrong
8 0
3 years ago
The earliest (that is, the oldest) stone tools are referred to as:
Rina8888 [55]

Answer:

The correct option is : a. Oldowan

Explanation:

The Oldowan or Mode I tools are the simply earliest or the oldest recognizable tools, preserved in the archaeological records.

The oldest Oldowan tool is dated about 2.6 million years ago and was found in Gona, Ethiopia. These tools were used in the Lower Paleolithic period, about 2.6 million years ago until 1.7 million years ago. These tools were used in Africa, Middle East, South Asia and Europe, by the early humans.

5 0
4 years ago
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