C. dinosaur footprint (because a trace fossil is the trace of an animal instead of the animal itself).
Answer: Dinosaur footprint
Explanation:
The trace fossil can be defined as the geological records of the biological activity. They are fossils but only their imprints can be seen they are not the living forms preserved.
The best known fossils are the dinosaur trackways. It can be defined as the impression which is made by the organism on the substrate.
The remains of the organic matter preserved in order to study about the organism. These traces shows the behavior of the organism and helps in studying about it.
help please stuck on 2, 4, 5 on crossword
2 deoxycibose
4 mutation
5 dnafingerprint
In an ecosystem, there are many factors that affect how many organisms can survive there. Which of the following is one of those factors?
A.
color of flowering plants
B.
number of times humans have seen the area
C.
availability of water
D.
age of mammal species
I think C) availability of water is your best answer because alot of organisms count on water as a major resource because they need it to survive so a lack or a gain in the amount of water will majorly effect an ecosystem.
Answer:
availability of water because animals need water to survive
Explanation:
What type of rock is likely to form where continental plates collide?
A. Extrusive
B. Igneous
C. Metamorphic
D. Sedimentary
Answer:
Metamorphic (c)
Explanation: I actually took this test and got it all right the answer is NOT igneous.
The light independent reactions could not take place without the high-energy products produced in the light dependent reactions. These high-energy products are ___________ and _____________.
NADPH
Carbon dioxide
PGA
ATP
PGAL
RuBP
The given blanks can be filled with NADPH and ATP.
The dark reactions or light-independent reactions of photosynthesis refers to the chemical reactions, which transforms carbon dioxide and other constituents into glucose. These reactions take place in the stroma, that is, the fluid occupied region of a chloroplast external to the thylakoid membranes. These reactions use the products of light-dependent reactions, that is, NADPH and ATP to do further processes.
The moth species Biston betularia has two color morphs, or variants. One has a speckled white and black color, while the other is all black. In the early 1800s in England, the distribution was 10,000 speckled morphs to 1 black morph. That distribution changed dramatically between 1900 and 1950. By 1950, the distribution of the speckled morph had declined to less than 3% of the population and the black morph distribution increased to 97%. Which statement most likely explains this change?
A. A predator of the moth underwent steep decline, which reduced selective pressures on the moth.
B. A chance mutation occurred in one black individual, which gave an advantage to the black morph's ability to survive.
C. The changes are due to normal random fluctuations that might be observed in any population over time.
D. Changes in the environment changed each morph's ability to evade predation in different ways.
I think this one might be D. I used the process of elimination for this.
A: If the predator began to die out, then both morphs would have grown in population.
B: Changes in mutation usually happen over a greater period of time than just 50 years.
That leaves C and D. I know nothing of the normal random fluctuations, so I can't say for sure that this is right. Therefore, my mind views D as the right answer.
While mutation occurs over a great span of time, a change in environment can happen faster, and often kills off some species since they don't have the tools for survival.
What is one benefit of a nonrenewable resource, such as natural gas?
Generates large amounts of electricity
Less expensive over time
Produces pollution
Will run out eventually
Answer:
Generates large amounts of electricity
Explanation:
One of the few benefits of nonrenewable resources is that they can generate large amounts of power. One plant using natural gas to generate electricity can power up homes and building for thousands of miles. This in spite of the wasted energy in the whole process of transforming them to pure energy, around 60% of the energy is wasted.
As they are scarce, they become more difficult to find over time, to access them a lot of resources must be used. This means that over time they become more expensive. It all depends on therank of time you want to calculate costs.