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pshichka [43]
3 years ago
6

What is the key to natural selection ?

Biology
2 answers:
balu736 [363]3 years ago
5 0
The top one should be right
ra1l [238]3 years ago
4 0

Answer:

Survival of the fittest?

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I dont know what to do for this​
chubhunter [2.5K]

Answer:

1. find the temperature in the area for longitude.

2. fine the times, and record them

Explanation:

3 0
3 years ago
Walls that separate fungal cells are called _______.
Ivahew [28]
The rigid layers of fungal cell walls contain polysaccharides called chitin and glucans. The wall protects the fungus from desiccation and predators. Most fungal hyphae are divided into separate cells by endwalls called septa(e). These tiny holes in the septa allow the rapid flow of nutrients and small molecules from cell to cell along the hypha. 
7 0
4 years ago
How do scientists calculate the age of the earth? What if the age of the earth?
PSYCHO15rus [73]
The best estimate<span> for </span>Earth's age<span> is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, </span>scientists calculated<span> the relative abundances of elements that formed as radioactive uranium decayed over billions of years.</span>
4 0
3 years ago
Why are many trials taken and averaged in an experiment?
nignag [31]

Many trials are taken and averaged in an experiment to reduce the measurement error.  

A great manner by which error is reduced or to enhance the accuracy of measurement is to take many measurements and compute their average. In other terms, one attain accuracy via averaging.  

This also validates the repeatability of the measurement. The kinds of experimental error include mistakes in data entry, human error, mistakes in the design of the experiment, or systematic error, or random error due to environmental circumstances.  


8 0
4 years ago
What are the stages of labor and delivery?
Lina20 [59]

The correct answer is C. Dilation, strong contractions, and delivery of the baby and the placenta

Explanation:

Labor and delivery is divided into three main stages: the first stage includes the latent phase in which cervical dilation begins (3 to 5 cm) along with mild contractions and the active phase in which strong contractions occur along with complete or almost complete dilation; the second phase is the fetus expulsion or delivery in which the cervix is fully dilated and the baby is born; and the third stage is the delivery or expulsion of the placenta that occurs as the placenta separates from the uterus and is expulsed through mild contractions. Thus, stages of labor and delivery are dilation, strong contractions, and delivery of the baby and the placenta.

4 0
3 years ago
Read 2 more answers
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