What layer of the atmosphere receives enough energy from the Sun to break apart molecules and atoms?

What are the biological uses of measuring photosynthesis

jeka94

Measuring photosynthesis via the production of oxygen. Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.

5 0

3 years ago

Sensory input from the skin of the foot reaches the cerebral cortex via a third order neuron that originates in the:____________

larisa [96]

Answer:

Central posterolateral thalamus.

Explanation:

The third order neuron originates from Central posterolateral nuclei thalamus because it is the nucleus of thalamus because it receive impulses from the neospinothalamic tract and the medial lemniscus of the posterior column-medial lemniscus pathway i.e it received sensory information from the body, send it to the brain and then transfer the information to brodman.

6 0

3 years ago

an organism had 8 chromosomes in its body cells. how many chromosomes will be in the body cells of the offspring?

larisa [96]

Answer:

8

Explanation:

I am assuming that this organism reproduces sexually. The body cell of the offspring will be the same as the parent. The reproductive cell of the organism will have half the amount of chromosomes as the body cell.

So if the parent has 8 chromosomes in its body cells then the offspring will have 8 chromosomes in its body cells.

4 0

3 years ago

Please can someone help me at this

KIM [24]

Ok so producer is going to be..human, Eagle, cow, apple tree. Consumer is also going to be Eagle, human, and cow. and the rest will be decomposer unless you can count us as decomposers too.

6 0

3 years ago

PLEASE HELP!! 36 POINTS!!!

Serhud [2]

Answer:

Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing alleles becoming more common in the population.

Fitness is a measure of reproductive success (how many offspring an organism leaves in the next generation, relative to others in the group).

Natural selection can act on traits determined by alternative alleles of a single gene, or on polygenic traits (traits determined by many genes).

Natural selection on traits determined by multiple genes may take the form of stabilizing selection, directional selection, or disruptive selection.

Introduction

We've already met a few different mechanisms of evolution. Genetic drift, migration, mutation...the list goes on. All of these mechanisms can make a population evolve, or change in its genetic makeup over generations.

But there's one mechanism of evolution that's a bit more famous than the others, and that's natural selection. What makes natural selection so special? Out of all the mechanisms of evolution, it's the only one that can consistently make populations adapted, or better-suited for their environment, over time.

You may have already seen natural selection as part of Darwin’s theory of evolution. In this article, we will dive deeper – in fact, deeper than Darwin himself could go. We will examine natural selection at the level of population genetics, in terms of allele, genotype, and phenotype frequencies.

Quick review of natural selection

Here is a quick reminder of how a population evolves by natural selection:

Organisms with heritable (genetically determined) features that help them survive and reproduce in a particular environment tend to leave more offspring than their peers.

If this continues over generations, the heritable features that aid survival and reproduction will become more and more common in the population.

The population will not only evolve (change in its genetic makeup and inherited traits), but will evolve in such a way that it becomes adapted, or better-suited, to its environment.

Explanation:

Here's my notes, i used and got it correct.

5 0

3 years ago