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OLga [1]
3 years ago
5

You discover a new species and are given the task of describing and classifying it. Upon closer examination, you find that it ha

s a single duct for reproductive, excretory, and defecatory material as well as a lack of true nipples. Which group are you sure this species does not belong to?
a. Mammalia
b. Metatheria
c. Prototheria
d. Synapsida
Biology
1 answer:
love history [14]3 years ago
4 0

Answer:

a. Mammalia

Explanation:

Mammalia are the class species that have distinct systems and separate ducts for different activities like reproduction, excretory, and defecatory and moreover they have nipples to feed their young ones.

So, the above species which has a single duct for reproductive, excretory, and defecatory material as well as a lack of true nipples does not belong to Mammalia

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1. Describe what a growth factor is and<br> how it influences the cell cycle.
igomit [66]

Growth factors are hormones, proteins, or steroid molecules that regulate many cellular functions. They can stimulate the cell division by giving the signal to the cell to progress in the cell cycle.  

<u>Explanation</u>:  

Growth factors are naturally produced within the body and travels through the body to bind to their receptors present on their target cells. These growth factors are capable of signalling the cell to divide, proliferate, or heel. Their main aim is to signal or tell other cell when to do and what to do. Due to the binding with the receptors the growth factors activates specific genes.

8 0
3 years ago
In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mend
Anestetic [448]
Crossing two true breeding parents with opposite parents is the key:

Assume W is straight wing and w is curly.
Then you are crossing WW with ww
This will result in ALL Ww as offspring - so all straight offspring

If you then cross Ww x Ww you end up with a mix of 
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Answer: 
P generation has straight wings and curly wings
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8 0
3 years ago
Gravity, the force that pulls objects toward the center of Earth, can sometimes have a significant impact on the rate of erosion
shtirl [24]

Answer:

A

Explanation:

Alluvial fan common at change in flow due to gravity occuring at a highly steep surface.

3 0
3 years ago
Read 2 more answers
There are 450 calories in 100 g of trail mix. If you burn 30 calories in 10 minutes of walking, how much trail mix should you ea
irinina [24]

Answer:

to replenish the energy spent walking for 2 hours, 80g of trail mix should be eaten

Explanation:

Firstly, let us calculate the number of calories burnt in 2 hours

in 10 minutes; 30 calories are burnt

∴ in 1 minute 30/10  calories are burnt = 3 calories are burnt

2 hours = 120 minute

∴ in 120 minutes 3 × 120 = 360 calories are burnt.

Next, let us calculate the amount of trail mix that contains 360 calories

100g of trail mix = 450 calories

450 calories = 100 g

1 calory = 100/450

∴ 360 calories = 360 × (100/450)

=  360 × 0.222 = 80g

∴ to replenish the energy spent walking for 2 hours, 80g of trail mix should be eaten

3 0
3 years ago
How can you determine an ecosystem's biodiversity?
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Okay so i have to type 20 characters........answer is B 
8 0
3 years ago
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