Answer:
d.They are still very common ,but threatened with increasing harvesting for timber.
Explanation:
Brazil's Araucaria trees:
These trees are very soft and can be cut so easily.Brazilian pines is also know as Araucaria tree.
Before 1950's or 60's the number of trees were more but now due to harvesting the number of trees become less.The these trees are used for timber and for glue also.
In the present time the availability of these trees threatened with increasing harvesting for timber.
So the our option d is correct.
<h2>Answer is option "A"</h2>
Explanation:
- Rehashed utilization of a similar class of pesticides to control a bug can cause unwanted changes in the genetic stock of a vermin prompting another type of counterfeit determination, pesticide opposition. At the point when a pesticide is first utilized, a little extent of the bug populace may endure introduction to the material because of their unmistakable hereditary cosmetics
- These people go along the qualities for protection from the people to come. Resulting employments of the pesticide increment the extent of less-helpless people in the populace. Through this procedure of choice, the populace step by step creates protection from the pesticide. Around the world, in excess of 500 types of bugs, bugs, and arachnids have built up some degree of pesticide opposition
- Hence, the right answer is option "A"
D) Blue Jays and Finches nest in the same Oak Trees.
Explanation:
This is an example of competition because two species are for the same thing, in this case, oak trees to nest in.
Reduces carbon monoxide emissions from gasoline and improves fuel octane
What are the test options?
