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sp2606 [1]
3 years ago
7

Which is a reason that many organisms that have existed in earth have left no fossils?

Biology
1 answer:
Lapatulllka [165]3 years ago
4 0
Many of the organisms that had existed on the earth left no fossils because most of them can not meet the conditions that must be fulfilled before fossils can form. For fossils formation to occur, the organism soft tissue must decay leaving behind the hard part [majorly bone] in the sediment. Overtime, layers of sediment have to build up and pressed down on the buried remains. As time goes on, water and mineral seeped into the remains and form crystals.
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Replication of the following DNA strand: ACGTCGA would give what complementary strand?
nexus9112 [7]

Answer: The complementary strand will be TGCAGCT.

Explanation:

Replication is a process of making identical copies of a DNA in the cell. It is a process by which the genetic information in a parent DNA is used to make two identical copies of DNA (daughter DNA) which are complementary to the parent DNA. Four bases are found in DNAs: Thymine, Adenine, Cytosine and Guanine. In forming the complementary strand, the bases in the parent strand pairs with appropriate bases. In base pairing, Adenine pairs with Thymine while Guanine pairs with Cytosine.

A= T while G = C.

5 0
3 years ago
which of the following statements most accurately reflects the mental health focus of the latter half of the 20th century? selec
VladimirAG [237]

The statement which most accurately reflects the mental health focus of the latter half of the 20th century is it's primarily focusing on negative aspects with little attention paid to the positive and is denoted as option C.

<h3>What is Mental health?</h3>

This is a term which is used to denote the cognitive, behavioral, and emotional well-being of an individual.

In  the  latter half of the 20th century , it primarily focused on negative aspects with little attention paid to the positive which is why there is a spike in the amount of sui-cide and other forms of mental deficiencies.

Read more about Mental health here brainly.com/question/24516788

#SPJ1

5 0
1 year ago
Do athletes need protein powders to increase their muscle mass or athletic performance?
hram777 [196]
You don’t HAVE to have it but it can improve your energy for a workout and help build muscle
5 0
2 years ago
Which one of the following statements accurately describes a characteristic of red blood cells?
wel
A)no, they do, they do have hemoglobin! what they do lack is a nucleus (so answer B is also false)

c) - no, inflammation would be more a response of immune cells (not red blood cells) to a foreign body or organism

d) -yes, this is the correct one!
6 0
3 years ago
Examine the diagram below, which shows stages in the water cycle.
Lesechka [4]

Answer:

A. accumulation

Explanation:

Precipitation is where water falls back to the surface of the earth through rain, snow, hail, etc.

Evaporation is where water heats up and turns into a gas.

Condensation is when the water cools down and turns to liquid.

3 0
3 years ago
Read 2 more answers
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