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Arisa [49]
2 years ago
13

I’ll mark brainiest if your right need ASAP

Biology
2 answers:
BabaBlast [244]2 years ago
7 0

Answer:

the answer is the 1st one

Explanation:

bulgar [2K]2 years ago
4 0
The answer is A or the first one
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Why do populations have variaton in certain traits
mash [69]

Answer:

Populations have variation in traits due to random mutation, crossing over and environmental conditions.

8 0
3 years ago
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Name a organism that does most of the Earth’s nitrogen fixation for the nitrogen cycle
zmey [24]

Carbon fixation only takes place in autotrophs. For example plants, algae, and some bacteria, or organisms that make their own food.

4 0
3 years ago
When you first get into the swimming pool the water feels rather cool; but after swimming for a while the water feels fine. a fr
swat32
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Which of these Earth spheres interacts with coral reefs to cause coral bleaching?
Svetllana [295]

Answer:

you need to attach a photo.

Explanation:

5 0
2 years ago
A forest has two groups of plants that appear to be very similar both phenotypically and genotypically. The major difference is
Gennadij [26K]
The basics would be that you'd need to find out if they could exchange genetic information. If not, they couldn't be considered part of one species. Set-up 2 artificial environments so both groups would produce pollen at the same time. Fertilise both plants with the other's pollen. Then fertilise the plants with pollen from their own group. 
Count the number of offspring each plant produces. 
If the plants which were fertilised by the opposite group produce offspring, they are of the same species. You can then take this further if they are of the same species by analysing if there is any difference between the number (and health) of offspring produced by the crossed progeny and by the pure progeny. You'd have to take into account that some of them would want to grow at different times, so a study of the progeny from their first sprout until death (whilst emulating the seasons in your ideal controlled environment). Their success could then be compared to that of the pure-bred individuals. 
Make sure to repeat this a few times, or have a number of plants to make sure your results are accurate. 
Or if you couldn't do the controlled environment thing, just keep some pollen one year and use it to fertilise the other group. 
I'd also put a hypothesis in there somewhere too. 
The independent variable would be the number of plants pollinated. The dependant variable would be the number of progeny (offspring) produced. 
5 0
3 years ago
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