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natulia [17]
2 years ago
12

The oldest true fossils are trace fossils called ___________________________ found in australia, and dated between 3.5 to 3.3 bi

llion years old.
Biology
1 answer:
xxTIMURxx [149]2 years ago
7 0

The oldest true fossils are trace fossils called Stromatolites found in Australia, and dated between 3.5 to 3.3 billion years old.

Raphael Baumgartner and their team have finally uncovered evidence of organic matter in the ancient rock formations known as stromatolites found at the Dresser Formation fossil site in the Pilbara region of Western Australia. They detail their findings in a new article published in the journal Geology.

With a variety of methods, including scanning electron microscopy, scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, nano-scale secondary ion mass spectrometry, and stable carbon isotope analysis, the researchers examined the samples in thin slices.

According to the team's analyses, pyrite, a mineral with many tiny pores, makes up the majority of the stromatolites. Additionally, the pyrite contains nitrogen-bearing organic material and strands and filaments of organic material that closely resemble the remains of microbial biofilm colonies.

To know more about stromatolites click here

brainly.com/question/11623402

#SPJ4

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Why do researchers believe that mammals evolved such large brains, such as that of hadrocodium?
tresset_1 [31]

Cause mammals are the only species that are well developed before birth unlike marsupial and monotremes

5 0
3 years ago
The equilibrium number of doctor visits in this economy is500 visits per year, while the equilibrium price is per visit.
Deffense [45]

Answer:

R10 is the equilibrium price

5 0
2 years ago
The energy that is released by the hydrolysis of atp by actin is used for:
anyanavicka [17]
The energy released is used for assembly of actin filament with myosin head. when myosin is attached to ATP its heads cannot bind to actin and therefore muscle will remain in relaxed form. However during muscle contraction an enzyme referred to as ATPase hydrolyses ATP to ADP and organic phosphate in the process releasing energy. The energy released changes the position of head of myosin which facilatate its binding with actin. Myosin moves towards m-line dragging actin along with it reducing the length of sarcomere leading to muscle contraction.  
5 0
3 years ago
the deeper we go in the ground , the older things get . you agree with this statment explain your answer​
strojnjashka [21]

Answer:

True

Explanation:

It is correct to say that the deeper in the ground we go, the older things get. This statement is specifically valid in a terrain that has not been disturbed by tectonic activities.

<em>According to the law of superposition of strata "in a sequence of sediment, the oldest layer is usually at the bottom and the youngest is on top provided the area is undisturbed". </em>

Based on this law of superposition of strata, it clearly seen that the deeper we go down in the earth, the older things get.

8 0
2 years ago
A man has blood type O, Rh negative. These are both recessive traits. He is married to a woman who has blood type A, Rh positive
frosja888 [35]

IAIARr is the genotype of the mother.

<h3><u>Explanation</u>:</h3>

The blood groups are the heredity characteristics of the individual which governs what antigen will be present in blood and what antibody will be present in the blood plasma.

The blood group has the genetic characteristics where A and B are dominant characters and O is the recessive character. Co Dominance is seen in case of blood grouping. Similar characteristics is seen with Rh character too where Rh positive is the dominant character and Rh negative is recessive.

The father has both the recessive characteristics. So he needs to be genetically homozygous which means that he has genetic setup of IoIo and rr.

Two child born has character of A blood group and rh positive, but the other child is A blood grouped and rh negative.

So the mother ought to be heterozygous with respect to Rh group, but she is homozygous with respect to blood group.

So her genetic setup is IAIARr.

4 0
3 years ago
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