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marissa [1.9K]
3 years ago
9

3. Rainforests cover____ of the Earth's land surface. A. 2% B. 6% C. 20% D. 60%

Biology
1 answer:
pashok25 [27]3 years ago
3 0

Answer:

B

Explanation:

Tropical rainforests cover only 7% of the Earth's land surface but contain over 50% of the worlds wildlife.

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Two species of tree frogs that live sympatrically in the northeastern United States differ in ploidy: Hyla chrysoscelis is diplo
Artist 52 [7]

Answer:

The correct answer is - polyploidy.

Explanation:

Speciation can be two types allopatric and sympatric speciation. Sympatric speciation is the process of speciation is developing the new species that diverged from the common ancestral species while the ancestral and developed species both can share the same place or geological area. The main cause of such speciation is due to the change in their genetic level more than environmental conditions.

In this case, the frog's species show differences in their ploidy level as well as their mating call but polyploidy is the most likely the difference that evolved first rather than females call for mating.

Thus, the correct answer is - polyploidy.

5 0
4 years ago
Trisha is learning how to do a first-aid procedure known as CPR. She is practicing using a mannequin, or a model of the top half
jekas [21]

Answer:

it is not possible to check for a real pulse on a CPR mannequin

Explanation:

Based on the information provided within the question it can be said although extremely helpful, one limitation that CPR mannequins have is that it is not possible to check for a real pulse on a CPR mannequin. Being able to check the pulse of the victim is extremely important as it allows you to see how serious the victim's condition is and take appropriate measures.

8 0
3 years ago
Upon arriving at the residence of an elderly female who apparently fainted, you find the patient lying supine on her living room
Anna71 [15]
In this situation, you should direct your partner to manually stabilize the women's head, while you quickly visualize her chest to search for signs of breathing. I hope that this helps you!
8 0
3 years ago
Molecules that are present in the membranes of gram-negative bacteria and are the best known pamps are called ________.
miskamm [114]

Molecules that are present in the membranes of gram-negative bacteria and are the best-known pamps are called Bacterial lipopolysaccharides (LPSs).

Bacterial lipopolysaccharides (LPS) are the primary outer surface membrane elements present in almost all Gram-negative bacteria and it act as extremely strong stimulators of the innate or natural immunity in the diverse eukaryotic species ranging from insects to humans.

Eukaryotes are the organisms whose cells contain a nucleus and other membrane-bound organelles. eukaryote, any cell or organism that possesses a clearly defined nucleus. The first eukaryotic cells was evolved about 2 billion years ago. In this Cells with nuclei surrounded by a nuclear envelope with nuclear pores.

Learn more about lipopolysaccharides (LPSs) here

brainly.com/question/13049342

#SPJ4

4 0
1 year ago
How are humans impacting biodiversity in ecosystems around the world? Provide two examples to support your claim.
balandron [24]

Answer:

as humans population continues to grow, we're cutting down more trees and occupying more lands to suffice the need of citizens, therefore, decreasing the forest biodiversity. Our plastic bags, as well as wastes, are polluting the ocean and eradicating essential species that are required to sustain a balance ecosystem, therefore, decreasing the biodiversity of the ocean that are required to maintain a balance environment.

4 0
3 years ago
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