What is the difference between the sex chromosomes in human males and females? A Males have Y while females have X. B Females have Y while males have X. C Males have XX while females have XY. D Females have XX while males have XY.

Which of the following statements apply to the variation in human skin color? Select all that apply. Select all that apply. Human skin color variation likely evolved in response to differences in the intensity of sunlight around the world.

Mendel's experiments showed that: Plant characteristics are inherited. Pea plants are different from other plants. Plants cannot be crossed with different plants. Plant color is always a dominant trait.

What is the effect of limiting factors in a local environment?

True or false: animals perform respiration to create energy, however because plants perform photosynthesis, they do not have to perform respiration.

Scientists use fossils to learn about how future organisms will interact how living things change over time the personalities of extinct animals the amount of protein in an extinct animal's diet

I have a bar graph dont know how to read it?

Which is a function of cyclins? A) cyclins are carbohydrates that regulate DNA replication during the mitosis phase of the cell cycle. B) cyclins are glycoproteins that repair DNA in the beginning of the cell cycle.

Which is an innovation of gymnosperms?

When you go outside, it is common to hear a variety of bird songs. these songs vary among bird species as well as bird flocks. interestingly, some bird species that are highly unrelated have very similar song qualities.

Two factors which cause global climate change are listed below. Factor 1: Habitat loss Factor 2: Earth's axial tilt Which of these statements is correct about the two factors which cause global climate change?