1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Triss [41]
3 years ago
15

Explain what scientists might be able to learn about the seawater that existed millions of years ago by studying rocks that came

into contact with seawater at that time in the past . Use evidence from the text to support your inference.
Biology
1 answer:
oee [108]3 years ago
7 0

Answer:

About composition of water and organisms that lives there.

Explanation:

scientists might be able to learn about the composition of seawater that was present millions of years ago if we study those stones that comes in contact to that ancient seawater because the traces of particles still present on it. This study provides valuable information about ancient times of earth and its natural resources. These rocks also provides animals that were present in that sea water at that time.

You might be interested in
Which of these types of weathering requires the presence of water?
serg [7]

Answer:

A. Abrasion

Explanation:

<em>"In abrasion, one rock bumps against another rock. Gravity causes abrasion as a rock tumbles down a mountainside or cliff. Moving water causes abrasion as particles in the water collide and bump against one another."</em>

<em>-Lumen Learning</em>

8 0
3 years ago
Assume that you have 1 mL of a solution of amylase (an enzyme) at a concentration of 15 mg protein/mL. Calculate the volume of d
lidiya [134]

Answer:

42,5 mL

Explanation:

We need to use the serial dilution formula beacuse we start with a stock concentrate solution and we need to prepare a new less concentrated one.

DF=\frac{Vi}{Vf}

<u>DF in the dilution factor, Vi is the initial volume and Vf is the final volume.</u>

The first step is to have the same measurment unit so we need to convert 345 µg to mg.

we know that 1 µg equals 0,001 g, hence:

345 µg = 0,345 mg

now the final volume is 0,345 mg  protein/ mL and the inital volume is 15mg protein/mL, both of them are in the same unit so we can use the formula

DF= \frac{15mg protein/mL}{0.345mg protein/mL}

DF= 43,5 mg protein/ mL

Now since the question said that we already have 1.0mL of the amylase stock solution we need to subtract that 1.0mL to the 43,5 mg protein/mL

43,5mL-1,0mL = 42,5 mL

So, we need 42,5 mL of diluting buffer if we want a final concentration of 345 µg protein/mL (0.345 mg protein/mL)

8 0
3 years ago
The moray eel and grouper fish hunt together. When both hunt together, prey barely stands a chance: hide in the reef, the eel ea
vivado [14]

Answer:

We can immediately cross-out C

We can also cross-out  A.

Now we have B and D.  Commensalism and Mutualism. Now, commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm.

Mutualism is the doctrine that mutual dependence is necessary to social well-being.

I would say D: Commensalism​. Both fish can survive without each other.  

7 0
3 years ago
A series of two-point crosses, involving 7 genes (a-g), were carried out, and the following recombination frequencies were obtai
levacccp [35]

Answer:

Explanation:

Genes with recombination frequencies(RF) of 50 assort independently and are not genetically links together but gene that have less than 50 RF are genetically linked.

The Linked genes included

a-d 12 c-e 26

a-g 4 d-g 8

b-c 10

b-e 18

Starting the order from the most tightly linked to the least

a-g 4, genetic distance is 4cM

d-g 8 genetic distance is 8cM

b-c 10 genetic distance is 10cM

a-d 12 genetic distance is 12cM

b-e 18 genetic distance is 18cM

c-e 26 genetic distance is 26cM

8 0
3 years ago
Colors seen in images made from electron microscopes are
never [62]
Added to make certain structure easier to see.
8 0
3 years ago
Other questions:
  • About 90% of the alcohol a person drinks will be oxidized by the __________, which takes time.
    5·1 answer
  • Which organelle would you expect to see lots of in a cell with a high energy requirement (e.g., muscle cells, sperm cells)?
    11·1 answer
  • Identify the earth motion that provides the basis for our system of local time and time zone
    7·1 answer
  • The equation below can be used to find h, the number of hours it will take Abbott and Costello to prepare Thanksgiving dinner.
    6·1 answer
  • In an individual that is heterozygous for a particular trait, expression of the recessive allele is masked. In an individual tha
    13·1 answer
  • What are 3 types of scientific investigations
    11·2 answers
  • Plz help will mark brainliest if correct answer only
    14·2 answers
  • Your muscular system interacts with your nervous system when you ____.
    6·2 answers
  • Please helppppppp!!!!!!!
    10·1 answer
  • What is gene expression​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!