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djyliett [7]
2 years ago
8

Radioactivity was discovered around what year?

Biology
1 answer:
RideAnS [48]2 years ago
6 0
Radioactivity was discovered in 1896
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PLS HELP!!!
choli [55]
D. Oxygen and metal


They usually contain some form of metallic cation, given that carbonates are the most distributed minerals in the Earth's crust.

Hope this helped!
5 0
3 years ago
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How does a vascular system serve the needs of a plant cell??
saw5 [17]
We first have to understand what a vascular system is. A vascular system consists of the water-carrying tube(xylem) and food-carrying tube(phloem). These 2 tubes are very essential for plants to survive. The xylem transports water to the leaves thru the stem to nourish the leaves so as to make food. The word equation is : Water + Carbon dioxide ----> Glucose + Oxygen. The phloem on the other hand transports the food from the leaves that creates them amd sent them to all parts of the plant. It is often a misconception that food is only sent to the fruits. The plant receives nutrition from the food that is made by the leaves. Overall the vascular system plays a very importamt roles in the survival of the plant.

To put it simple, think of the vascular system of a plant like the circulatory system of a human. Without the circulatory system, the human is unable to receive oxygen for breathing and remove carbon dioxide which is acidic in nature and pose a threat to the human body.
8 0
3 years ago
If 1000 f2 offspring are obtained, how many flies of each phenotype are expected?
aniked [119]
<span>In Drosophila + indicates wild-type allele for any gene, m is mahogany and e is ebony. Female parents are m+/m+ and males are +e/+e. F1 are m+/+e, all wild type. F1 females are crossed with me/me males - the test cross. Offspring will be : non recombinant m+/me, mahogany wild type or +e/me wild type ebony. OR recombinant me/me mahogany ebony or ++/++ wild type. As the two genes are 25 map units apart, the percentage of recombinants will be 25% and therefore percentage parental types will be 75%. 75% 1000 is 750. There are two parental types, so you would expect 375 of each. Therefore, you would expect 375 m+/me and 375 +e/me. 25% of 1000 is 250 split between two recombinants =125 of each. Therefore you would expect 135 me/me and 125 ++/++</span>
7 0
3 years ago
What is the turgor pressure equal to if there is no net diffusion
vova2212 [387]
Turgor pressure is equal to the outside pressure of the atmosphere
3 0
3 years ago
Which subclimates have high annual precipitation
Zanzabum

Answer:

marine west coast, humid continental, humid subtropical

Explanation:

this should be right.

5 0
3 years ago
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